This is not core doctrine. Both readings below are held by faithful, Bible-believing Christians across denominations, and neither one is required to affirm the gospel. Formation presents both fairly and does not take a position for you.
The tension, stated plainly
Peter's instruction at Pentecost ties baptism directly to a personal act of repentance:
Peter replied, "Repent and be baptized, every one of you, in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit."
Acts 2:38, BSB.
But later in the same book, Luke twice records a different pattern — a believing head of household responds, and their entire household is baptized alongside them:
And when she and her household had been baptized, she urged us, "If you consider me a believer in the Lord, come and stay at my house." And she persuaded us.
Acts 16:15, BSB — Lydia of Philippi.
Both patterns are genuinely in the text. Whether baptism should follow only a person's own profession of faith, or whether it may properly extend to the believing head of household's whole family, is exactly the kind of question this page exists to compare rather than settle.
Two responsible readings
Baptism follows a personal profession of faith
Baptism is reserved for those who can themselves repent and believe. The New Testament pattern is repentance or belief first, baptism second — a public sign of a decision only the person being baptized can make. Infants and other household members are baptized later, upon their own profession.
Matthew 28:19-20 — Jesus's own instruction is to "make disciples… baptizing them… teaching them to obey," a sequence in which disciple-making, which requires the capacity to respond and follow, precedes baptism.
Acts 2:38 — Peter ties baptism to "repent," a personal act only an individual can perform on their own behalf, not something exercised for someone else.
Acts 2:41 — "Those who embraced his message were baptized," directly linking baptism to a prior, individual act of receiving the word.
Every individual conversion account in Acts follows the same order — belief, repentance, or receiving the word is described first, baptism second — a pattern credobaptists read as normative rather than incidental to the narrative.
If this reading is correct, baptism functions as a believer's own testimony, and children raised in the church are baptized once they can profess that faith for themselves — not before.
Baptism may extend to a believing household
Baptism functions similarly to circumcision under the old covenant — a sign placed on a household through its believing head, not requiring each member's own prior profession. The repeated household-baptism accounts in Acts, read alongside Paul's baptism-circumcision parallel in Colossians, show the covenant sign extending to a believer's whole family.
Acts 16:15 — Lydia's household is baptized together upon her own faith response, with no individual profession recorded for the rest of the household.
Acts 16:31-33 — Paul and Silas tell the Philippian jailer, "Believe in the Lord Jesus and you will be saved, you and your household," and that same night "he and all his household were baptized."
Colossians 2:11-12 — Paul explicitly likens baptism to "the circumcision performed by Christ and not by human hands," and circumcision under the old covenant was applied to the infant sons of believing households as the covenant sign.
Household baptisms appear multiple times in Acts with no individual profession of faith recorded for every member — a silence paedobaptists read as significant, given how explicit Luke is elsewhere about individual belief preceding baptism, as with the Ethiopian eunuch in Acts 8.
If this reading is correct, the children of at least one believing parent may appropriately receive the sign of baptism as members of a covenant household, with their own personal faith expected to grow into what the sign already marked.
What both readings actually agree on
Both sides affirm baptism is a real, commanded sign instituted by Christ (Matthew 28:19) and normal for every believer, not optional. Both affirm baptism itself does not save — it is a sign and response, not the means of salvation, echoing 1 Peter 3:21's description of baptism as "not the removal of dirt from the body but the pledge of a good conscience toward God." And both affirm the local church, not the individual alone, oversees when and how baptism is administered.
Why Formation doesn't pick one
This disagreement runs through denominations that all affirm the gospel, biblical inerrancy, and the deity of Christ — it is not a first-order doctrinal line the way the resurrection or justification by faith are. Presenting one side as simply correct would mean Formation quietly taking a denominational position on a question sincere, careful readers of the same text have held differently for centuries. The goal here is a fair, sourced comparison — not a verdict.
Practicing this in Formation
If this question comes up in your own group study — most naturally while working through Acts or a passage like Colossians 2 — Formation's own guide to handling disagreement in group covers exactly this kind of idea-conflict: name it as a real, legitimate disagreement, point to a resource like this one, and keep moving without forcing the room to a single conclusion that night.