From the sermon preached on September 27, 2026
True repentance does not require a perfect track record; it begins when a believer who has failed turns back to God and makes things right with the people he has hurt. In Genesis 20, Abraham lies about his wife Sarah and endangers God's promise, yet God's grace calls him back into who he truly is and gives him a part in the repair.
Barry Mershon, Lead Pastor of Believers' Chapel in Murfreesboro, opened this message with a warning label: this one might stir you up. He admitted it stirred him up first. This chapter is not one of the dramatic ones, like the fire falling on Sodom and Gomorrah in Genesis 19; it is quieter, and that is the point.
Faith is often lived in ordinary places: our conversations, our faults, and our failures. Genesis 20 shows a great man of faith getting it badly wrong, and it shows God stepping in anyway.
Here is what this chapter teaches: God's grace does not cancel our identity when we fail, true repentance shows itself in action, and sin is always trying to rob the people we love of blessing.
How God Uses Imperfect People Like Abraham
Genesis 20 opens with Abraham moving into the Negev, the southern region of Israel, and settling in Gerar. There he tells everyone that Sarah, his wife, is his sister, and Abimelech, the king of Gerar, takes her into his household. Abraham had done the same thing years earlier in Egypt, and he does it again only months after God promised that Sarah would give birth to a son within a year.
Fear had pushed every promise out of Abraham's mind. His lie endangered Sarah's purity, the birth of Isaac, and the plan of salvation God intended to bring to the whole world through his family. God could have sent angels to pull Sarah out; instead, He came to Abimelech in a dream and said, "Indeed you are a dead man because of the woman whom you have taken, for she is a man's wife."
Then God said something surprising: "Now therefore, restore the man's wife; for he is a prophet, and he will pray for you and you shall live." Abraham was acting like anything but a prophet, and he was still a prophet. This is how God uses imperfect people; He does not need us, but He chooses to use us.
Notice what God asked Abraham to do first: pray for the man he had wronged. Barry Mershon admitted that after he sins, he often does not feel worthy to pray, yet God's grace does not change based on what we do or do not do. God uses imperfect people who come back to Him in prayer, because in Christ every believer is invited back into fellowship as the new creation He has made.
Today, if there is someone you have hurt, take two minutes and pray for that person by name. Let that small prayer be your first step back, and remember that the God who uses imperfect people has not given up on you.
What Does Living by Faith Look Like When You Are Confronted?
The real example of humility in Genesis 20 is not Abraham; it is Abimelech, a king who did not know the God of Abraham. After the dream, "Abimelech rose early in the morning, called all his servants, and told all these things in their hearing." He did not stall or work through the logistics first; he showed the sincerity of his heart by acting quickly.
Then he asked Abraham a piercing question: "What did you have in view, that you have done this thing?" Barry Mershon remembered setting a trap as a boy of 10 or 11 and finding a possum in it; his father handed him a hatchet and told him to finish the job, and he cried the whole time. He had never considered the consequences of what he set in motion, and neither had Abraham.
Living by faith includes thinking before we act, because "a prudent man foresees evil and hides himself." It also means being correctable in a wise way. Howard Hendricks, the longtime Dallas Theological Seminary professor, used to ask: if we are called to be like Christ, how much change can we expect?
The answer is a whole lot, and living by faith means receiving daily correction from God's Word as something good, not condemning. Not every critic means well, so test hard words with your spouse or a trusted friend who loves you and loves the Lord. Even unkind correction often holds a grain of truth worth keeping.
The next time someone corrects you this week, pause before defending yourself and ask, "Is there a grain of truth here?" That pause is what living by faith looks like in an ordinary conversation.
Returning to God After Failure: What True Repentance Restores
Abimelech did more than God required. God told him only to restore Sarah, yet he gave Abraham sheep, oxen, and servants, gave a thousand pieces of silver to vindicate Sarah before everyone, and offered Abraham his pick of the land. True repentance goes beyond the minimum and shows real consideration to the people we have wronged.
Then "Abraham prayed to God; and God healed Abimelech, his wife, and his female servants." Barry Mershon grew up fearing that God was waiting to zap him with a lightning bolt, but he found something different. God does discipline His children, yet "the goodness of God leads you to repentance," and He is "not willing that any should perish but that all should come to repentance."
Returning to God after failure matters because sin is always trying to rob us, and the people we love, of blessing. Abraham's lie threatened the blessing God promised to the whole world through his family. Barry Mershon shared that his wife has called out his sharp tone more than once; when he defends himself, the conversation gets worse, but when he sincerely apologizes, their marriage receives the blessing God intended.
It can be as simple as dealing with your heart before you walk in the door at the end of the day, then choosing to be joyful, kind, and curious about your family's day. Nothing else has changed, yet true repentance in your heart becomes blessing in your home
Today, ask the Lord one question: "What is the one thing You want me to focus on?" Returning to God after failure starts with one honest step in one area, like fear or the approval of others, and returning to God after failure always touches the people closest to you.
What Genesis 20 Teaches About God's Grace and Our Part
In Genesis 20:7, God gives Abimelech clear instructions and gives Abraham a role in the repair. Barry Mershon pointed out that God did His part, Abimelech did his, and Abraham did his; Ephesians 4:16 describes the body growing as every part does its share.
1. God's Part
What He Did: He came to Abimelech in a dream and protected Sarah's purity and the birth of Isaac.
What It Shows: God's grace protects His promises even when His people fail.
2. Abimelech's Part
What He Did: He rose early, confronted Abraham, and restored Sarah with generous gifts.
What It Shows: Sincere repentance is seen, felt, and known through quick, gracious action.
3. Abraham's Part
What He Did: He prayed for Abimelech, and God healed Abimelech's household.
What It Shows: Failure does not erase the identity God has given; prayer is often the first step back.
Marks of true repentance from this passage include:
Acting quickly instead of waiting for the perfect moment
Owning the wrong without blaming others or God
Showing consideration beyond what is required
Praying for the people your sin affected
Staying correctable with people who love you
Finding a Church Family Where You Can Start Over
Failure has a way of making us hide from God and keep everyone else at arm's length too. You do not have to carry it alone; at Believers' Chapel, real people share real struggles, and nobody here claims to be perfect, only in process. Whether you live a few minutes away in Murfreesboro or drive in from elsewhere in Rutherford County and Middle Tennessee, you will find us Sunday mornings at 10am on South Rutherford Boulevard, across from Black Fox Elementary, in jeans and with fresh coffee on.
God Is Still Calling You Back
Genesis 20 is in the Bible because Abraham endangered the promise of God, and God stepped in to protect it anyway. God's grace called a failing prophet back to prayer, and it is calling you back today. God wants all the families of the earth to be blessed through Jesus Christ, and that blessing can start in your own home.
When you are ready to meet us in person, our visit page covers service times, kids check-in, and what a Sunday looks like, so plan your visit here.
You do not have to figure this out alone, and a staff member would love to sit down with you, so reach out here.
Frequently Asked Questions
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True repentance is a turning of the heart back to God that shows up in action. In Genesis 20, Abimelech rose early, made things right, and went beyond what God required, while Abraham prayed for the man he had wronged. Romans 2:4 says it is God's goodness, not fear of punishment, that leads us there.
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Start by praying for the person your failure affected, the way God told Abraham to pray for Abimelech in Genesis 20:7. None of us are worthy on our own, yet in Christ every believer is welcome back into fellowship with God. Short, honest prayers count.
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Abraham told the same lie in Egypt and again in Gerar, so you are not the first. Ask the Lord to show you one area to focus on, such as fear or the approval of others, rather than trying to fix everything at once. Invite trusted believers who love you to walk with you in that area.
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Abraham's failure did not erase the identity God had given him. God told Abimelech that Abraham was a prophet who would pray for him, showing that God chooses to use flawed people and calls them back into who they truly are.
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The best correction comes from people who love you, love the Lord, and want your good. Some criticism comes from bad motives, so talk it over with your spouse or a trusted friend. Even hard words often hold a grain of truth worth bringing to God.