Family Resemblance

Every new baby gets the same question: who does she look like? It starts before the baby has even settled into the room — her mother's eyes, his grandfather's hair, a laugh that sounds exactly like Dad's. People have been searching for family resemblance for a very long time. It's likely even Adam and Eve looked at Abel and wondered how he got here — and noticed he kind of looked like them.

Resemblance is never just about appearance. It answers a deeper question: who belongs to whom? That's the question underneath Romans 4:9–12. Who belongs in Abraham's family? Who may rightfully call him father? For Paul's Jewish readers, the obvious answer was ancestry and the sign of circumcision. But Paul takes the family album off the shelf and asks us to look more carefully — because Abraham's family turns out to be both more inclusive, and more exclusive, than anyone expected.

God promised Abraham a nation, a land, and a blessing to all the families of the earth — while Abraham and Sarah had no children at all. In Genesis 15, God brought Abraham outside, pointed him to the stars, and told him to count them if he could. Abraham believed the LORD, and it was counted to him as righteousness.

This is more than a Jew-and-Gentile question. It's a reminder that the blessing of justification was never something inherited. You are not destined to repeat the faithless footsteps of your parents, and you can't coast on the faithful ones either. Every generation has to decide for itself whether it will trust Christ. Bob and Ruth, two of the godliest people I've known, raised a son and daughter biologically and adopted a third. When her brother needled her about being adopted, she'd answer, "I may be adopted, but that just means Mom and Dad CHOSE me. They didn't have a choice with you." She didn't look like her family — but there was a strong family resemblance in her commitment to Christ. Belonging isn't inherited. It's believed.

Medieval families were identified by crests and coats of arms displayed on shields and banners — signs that were passed down and came to represent a family's identity and history. Circumcision was Israel's version: the visible mark of belonging to God's covenant people. But Paul is precise about the order. Circumcision was a sign and seal of the righteousness Abraham already had by faith. It didn't cause his righteousness — it confirmed it.

The Christian faith has its own outward signs, and they matter — but they don't bring about right standing before God. One of the hardest things for a young believer to sort out is separating baptism from justification. Justification happens the moment we trust the gospel; baptism is meant to follow as the outward picture of what already happened on the inside. Parents, don't push a child into the water before there's real confidence they understand and have trusted the gospel — a sign that outruns the reality it's meant to confirm doesn't do anyone any favors down the road.

Paul names Abraham father of two groups: Gentiles who believe, and Jews who do more than carry the sign — who walk in the footsteps of Abraham's faith. Both belong to the same family in the same way, through faith alone. Justification is step one, and it's only step one; our legal standing doesn't get revoked by later sin. But saving faith produces a change in our affections — not perfection, but a settled desire to live out of the righteousness we've been given. That walk becomes our family resemblance.

Which means something for anyone who claims the family name but never walks in the footsteps of faith: whatever profession was made, the faith of Abraham was never truly present. Maybe their trust has been in the sign instead of the Savior. Maybe it's been in a prayer prayed once and coasted on ever since. Maybe it's been in a family that was part of the family. None of that is the same as believing. Human courts can only say "not guilty" — they can't say "justified." Only God can look at someone with nothing of their own to offer and count it to them as righteousness, the same way he did for Abraham.