Welcome!

We are Mitch and Sarah Marmelstein, and we’re thrilled to share our ministry and blog, Faith in Action, with you.

Our heart is to live out Jesus’ teachings in a Spirit-led community and partner with others who want to do the same. If you’re seeking encouragement, a sense of community, or an opportunity to collaborate, we are so grateful you’re here. Explore the site, reach out to connect, and may the grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit be with you.

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FAITH IN ACTION

Latest Blog Posts

What Kind Of Limp Do You Walk With?

by Mitch Marmelstein | June 6, 2026 | Faith in Action | 3 Comments

Did you know there are two different Hebrew words for “limping” in the Bible? One describes the exhaustion of wavering between idols (pasach); the other marks a life-changing, holy encounter with the Living God (tsala). Read how a career-ending sports injury taught me the difference, and ask yourself: What kind of limp are you walking with?

Seven Weapons of Spiritual Warfare

by Mitch Marmelstein | February 5, 2026 | Faith in Action | 3 Comments

Seven Weapons of Spiritual Warfare Thank you, Lord, for the weapons You give us in our battle against sin. I must confess: as soon as I get confident in my ability “not to sin,” or shortly after telling someone how they can find victory in Christ over their sin, I...

Prayer: Closing the Gap Between Faith and Action

by Mitch Marmelstein | January 28, 2026 | Faith in Action | 3 Comments

The Breach Between Belief and Behavior Every human being who has ever walked the face of the earth, except for the one man Jesus Christ, has at one point or another known the right thing but failed to do it. Whether as a child knowing it is kind to share toys with a...

From Barrenness to Birth: A Christmas Miracle

by Mitch Marmelstein | December 25, 2025 | Faith in Action | 1 Comment

Barrenness In The Old Testament Of all the breathtaking miracles we encounter throughout the Old Testament: the ten plagues, the parting of the Red Sea, manna and water in the wilderness, Joshua commanding the sun to stand still, Elijah summoning fire on Mount Carmel,...

“Go Back to Your First Love” Revelation 2:1-7

by Mitch Marmelstein | December 15, 2025 | Faith in Action | 0 Comments

Sermon Summary: "Go Back to Your First Love" Friends, I want you to imagine something with me: The first time you truly fell in love 🙂 that all-consuming, fiery first love—the constant hand-holding, written love notes, creative dates, those 45-minute goodbyes, the...

“First Love & Lemon Bars” Lessons from First Year of Marriage

by Mitch Marmelstein | November 21, 2025 | Faith in Action | 8 Comments

My wife has been encouraging me to write lately, and I have to admit, it’s been hard. We just moved from California to Texas, trading the coast of Oceanside for the plains of Fort Worth. In the chaos of it all and the excitement of new beginnings, I find myself in a...

The Heart of Faith in Action (James 2:14-26)

by Mitch Marmelstein | November 17, 2025 | Faith in Action | 0 Comments

Summary: Faith in Action: The Theology of a Living Faith (James 2:14-26) This sermon, titled "Faith in Action: The Theology of a Living Faith," addresses the struggle to live out an action-packed faith rather than one that is merely an "intellectual and private belief...

A Prayer for Repentance & Righteousness. The Cost of Following Jesus. In Honor of Charlie Kirk.

by Mitch Marmelstein | September 12, 2025 | Faith in Action | 5 Comments

Heavenly Father, Holy is Your Name. I thank You that everything You do and everything You make is good. Your ways, Your laws, and Your righteousness hold Your creation together. In You and You alone, we find order, peace, joy, rest, and abundant life. Apart from You,...

Practicing the Prophetic

by Mitch Marmelstein | July 31, 2025 | Faith in Action | 5 Comments

July 21st, 2025. Jacó, Costa Rica. On our mission trip, each day brought a new opportunity to share the Gospel. We'd split into teams, hit the streets, and before stepping out, we'd always pray, asking the Lord for clues… breadcrumbs leading us to those ready to...

The Lord’s Supper

by Mitch Marmelstein | July 15, 2025 | Faith in Action | 1 Comment

My summarized dramatization of Exodus 19-24 The desert air sizzled with heat and anticipation, much like the moment just three months prior when God (Yahweh) miraculously parted the Red Sea. For three days, the Israelites consecrated themselves, washing their dirty,...

Speaking in Tongues

by Mitch Marmelstein | July 4, 2025 | Faith in Action | 6 Comments

When the day of Pentecost arrived, the Jewish celebration marking the first annual wheat harvest, all the followers of Christ were gathered together in one place, just as Jesus had commanded before His ascension to Heaven. After spending time sitting, waiting, and...

Baptism

by Mitch Marmelstein | June 14, 2025 | Faith in Action | 0 Comments

"You saved others, but you can't save yourself?!" The crowd gathered, violently shaking their fists at the cross, shouting, "If you’re really the Messiah of God, the Chosen One, the King of the Jews, then prove it!" Blood trickling down his wilted head, Jesus of...

Enemies of Grace #8 Comparison

by Mitch Marmelstein | May 30, 2025 | Faith in Action | 3 Comments

Running from his past, Jacob found himself in the faraway land of Haran, working for his uncle Laban. In exchange for Rachel, Laban's youngest daughter, Jacob committed to seven years of labor. Jacob, who had previously deceived his older brother Esau out of his...

Enemies of Grace #7 Conceit

by Mitch Marmelstein | May 16, 2025 | Faith in Action | 1 Comment

Simon and Andrew toiled all night and caught nothing. As they cleaned their dirty, empty nets on the shore with the rising sun, embarrassment hit them. Not one fish was there to bring home for breakfast! “What was all that work for anyway?” they must have thought. It...

Enemies of Grace #6 Carnality

by Mitch Marmelstein | April 25, 2025 | Faith in Action | 3 Comments

About 3000 years ago, there lived a man named Samson, an Israelite whom God blessed as the strongest man who ever lived. Israel, which had been doing what was evil in the sight of the Lord, had fallen out of divine protection into the hands of the Philistines, who...

Enemies of Grace #5 Control

by Mitch Marmelstein | April 18, 2025 | Faith in Action | 5 Comments

This Good Friday morning, I read from the Gospels all the events that took place the day before the arrest and crucifixion of our Savior, Jesus Christ. Although I have read these portions of Scripture numerous times (Matt. 23-26, Mark 13-14, Luke 22-23, John 13-17),...

Enemies of Grace #4 Consumerism

by Mitch Marmelstein | April 3, 2025 | Faith in Action | 2 Comments

Once upon a time in America, "blue laws" prohibited businesses from opening on Sundays. It wasn't that long ago! Imagine: neither Chick-fil-A nor In-N-Out was available on a Sunday! What would we do… STARVE!! This seems almost laughable to modern Americans, as we've...

Enemies of Grace #3 Convenience

by Mitch Marmelstein | March 28, 2025 | Faith in Action | 4 Comments

“God has put eternity into man’s heart, yet so that he cannot find out what God has done from the beginning to the end.” Ecclesiastes 3:11 The book of Ecclesiastes amazes me, mainly because of who wrote it: King Solomon, to whom the God of heaven and earth came in a...

Enemies of Grace #2 Complacency

by Mitch Marmelstein | March 21, 2025 | Faith in Action | 1 Comment

Have you ever heard of "the doldrums"? No, it's not a funny name you can call your friends! In the ocean near the equator, the doldrums are windless waters, without current and in ancient days, without hope of escape. Now we have engined ships that can cruise in any...

Enemies of Grace #1: Comfort

by Mitch Marmelstein | March 14, 2025 | Faith in Action | 6 Comments

Psalm 63:1 O God, you are my God; earnestly I seek you; my soul thirsts for you; my flesh faints for you, as in a dry and weary land where there is no water. King David, likely writing this psalm fleeing from either King Saul or his son Absalom, penned these words not...

Knowing Jesus: Beyond Bible Knowledge

by Mitch Marmelstein | March 3, 2025 | Faith in Action | 5 Comments

I love reading the Bible and have read it from cover to cover countless times. My fascination with Scripture began when my friend, Tags, showed me how Jesus is present throughout the Old Testament. This passion, which has grown over time, led me to pursue a Master of...

The Power of Declaration

by Mitch Marmelstein | February 21, 2025 | Faith in Action | 4 Comments

We all know the classic children’s story The Little Engine That Could by Watty Piper! For those unfamiliar with the story, perhaps the picture above will jog your memory. Even those who know the famous line, “I think I can, I think I can, I think I can!” may not...

Prayer Walking

by Mitch Marmelstein | February 13, 2025 | Faith in Action | 7 Comments

“The Road to Emmaus,” an 1877 painting by Robert Zund Last Saturday, I had a super busy day planned. We were going to help friend set up her event in Los Angeles at 7 a.m., and then visit family afterward. I didn't think I'd have time for prayer or a workout since we...

Giving

by Mitch Marmelstein | February 6, 2025 | Faith in Action | 2 Comments

Elijah Receiving Bread from the Widow of Zarephath 1 Kings 17:8-16 Giovanni Lanfranco (1621-1625) “Give to the one who asks you, and don’t turn away from the one who wants to borrow from you.” Matthew 5:42 CSB I would like to start this blog post on the topic of...

Fasting

by Mitch Marmelstein | January 31, 2025 | Faith in Action | 4 Comments

Last Saturday, for the first time, instead of taking my 2003 Chevy Tahoe to the shop, I changed the oil myself. With guidance from my dad and my father-in-law and help from some YouTube videos, I headed to O'Reilly's Auto Parts on a mission. After gathering all the...

Bowing Down

by Mitch Marmelstein | January 23, 2025 | Faith in Action | 0 Comments

“Come let us worship and bow down; let us kneel before the Lord our Maker.” David in Psalm 95:6

Submission

by Mitch Marmelstein | December 24, 2024 | Faith in Action | 0 Comments

As we approach the joyous occasion of Christmas, celebrating the birth of our Lord and Savior, Jesus Christ, I encourage us to consider the concept of "submission." In our society, this word often carries negative connotations, perceived as oppressive, restrictive of...

Testimony

by Mitch Marmelstein | December 13, 2024 | Faith in Action | 0 Comments

"But as for me, how good it is to be near God! I have made the Sovereign LORD my shelter, and I will tell everyone about the wonderful things you do.” Psalm 73:28 As mentioned in last week's blog on Faith that Waits, Sarah and I have been seeking God's guidance...

Waiting

by Mitch Marmelstein | December 6, 2024 | Faith in Action | 1 Comment

Joshua passing the River Jordan with the Ark of the Covenant by Benjamin West (1800)

Confession

by Mitch Marmelstein | November 29, 2024 | Faith in Action | 0 Comments

I remember vividly the first time I watched pornography at eleven years old. It was as shocking as it was thrilling. With unlimited internet access and no accountability, my adolescent pernicious curiosity turned into inescapable cyber slavery. For years after, I...

Thanksgiving

by Mitch Marmelstein | November 22, 2024 | Faith in Action | 1 Comment

Reflections on Exodus 14-15. But the Israelites had walked through the sea on dry ground, with the waters on their right and left like a wall to them. That day, the Lord saved Israel from the power of the Egyptians… When they saw the great power the Lord used against...

Prayer

by Mitch Marmelstein | November 15, 2024 | Faith in Action | 0 Comments

"Spiritual Warfare" by Ron Dicianni"The effectual fervent prayer of a righteous man availeth much."James 5:16bHave you ever wondered while praying, “Am I supposed to speak out loud, or can I just think thoughts?” God is omniscient, right? I mean, Lord, you perceive my...

Faith in Action: From Mind to Matter

by Mitch Marmelstein | November 14, 2024 | Faith in Action | 0 Comments

My whole life, I have been fascinated with the Lord of heaven and earth, the God of Israel, and the Scriptures and how they’ve pointed to one man, the Messiah Jesus Christ. I still remember the first time my friend Tags showed me a glimpse of Jesus in Genesis, which...

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Faith in Action: From Mind to Matter isn’t just another blog trying to give you more information about religion. It’s a call to action! What’s the point of knowing the Word of God if you don’t practice it? The Kingdom of God is not a matter of talk, but of power! Come dive into the transformative power of Faith in Action (FIA) and discover the true meaning of living a Christ-centered, Spirit-filled Life!

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Ministry

We’re passionate about seeing God’s Kingdom come and His will be done on Earth as it is in Heaven. To this end, we’re actively involved with NewSong and CANOPI. NewSong is a vibrant collective of house churches focused on outreach, discipleship, and passionately worshiping King Jesus. Our sister ministry, CANOPI, is a nonprofit dedicated to expanding the Kingdom in Central America. We do this by equipping, serving, uniting, and championing churches through free leadership training, marriage conferences for pastors, and tons of street evangelism.

Summer 2026 Update

by Mitch Marmelstein | May 22, 2026 | News | 2 Comments

I want to take a moment to boast in our Lord Jesus Christ. In May 2025, Sarah finished her indoor professional volleyball season with the San Diego Mojo, leaving her schedule completely open from June to December. As I mentioned in my last newsletter, after days of intentionally praying and asking the Lord, “How would you like to fill the rest of this year for Sarah?” she received a call from...

2025 Christmas Update!

by Mitch Marmelstein | December 15, 2025 | News | 0 Comments

Summer 2025

by Mitch Marmelstein | September 25, 2025 | News | 1 Comment

Sharing the Gospel + Groceries with a Venezuelan Family in JacoSinging “The Blessing,” Spanish & English with the church in ParritaWorshiping Jesus at the church in ParritaBlessing Pastor Sam at the house/jungle church in San DominicalTrying not to fall into the water at Crocodile BridgeBlanca & Marcus ministering to Fabricio who grew up without parentsBlessing and praying over the next...

Spring 2025

by Mitch Marmelstein | June 30, 2025 | News | 0 Comments

House Church & BaptismsOur Oceanside house church has been overflowing with joy this past month! We celebrated two baptisms! Even though we bought a huge horse trough for baptisms, we hardly use it because we got the ocean one block away! It's incredibly powerful to witness these young men count the cost and go "all in" for Jesus, dedicating their lives to following Him wholeheartedly. Check...

Winter 2025

by Mitch Marmelstein | March 31, 2025 | News | 0 Comments

We are overflowing with gratitude for God's faithfulness throughout the whirlwind of the first three months of 2025! We thank our Heavenly Father for His constant provision, guidance, and the incredible ways He has moved. Here are a few highlights: Oceanside House Church Launch We are thrilled to launch our NewSong house church in Oceanside! After much prayer and dreaming, we are excited to see...

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