Baptism was done to entire families including infants, and this is given in the New Testament, therefore repentance is not strictly needed *before *baptism. Cf. Acts 16:15,33; 18:8; 1 Cor 1:16;
In the 1st century, households were large extended family households. The households were not 2 parents and a few kids as we mostly think of a household today. Were there children present in the households? Maybe. Were they baptized? There are no records of household baptisms that state that the entire household was baptized without specifying that the whole household believed.
I think that “all” may have meant “all who were old enough to repent and believe.” In Judaism the age when children became accountable to atone for sin was 12 for girls and 13 for boys.
We often speak in terms like this when we say “everyone,” but don’t mean literally “everyone.”
“I went to the family reunion this weekend and my uncle brought his brand new Porsche. Everyone got to have a turn driving it around the block.”
Would someone ask: “How did your 2 year old nephew reach the gas pedal!?”
“Everyone in the wedding party got drunk.”
Would someone ask: “Why did they let the 4 year old flower girl get drunk?!”
I think the one hearing these stories would assume that everyone old enough to drive and everyone old enough to drink alcohol were included in “everyone.”
Household baptisms:
Acts 10:44-48 While Peter was still speaking these words, the Holy Spirit came on all who heard the message. The circumcised believers who had come with Peter were astonished that the gift of the Holy Spirit had been poured out even on Gentiles. For they heard them speaking in tongues** and praising God**.
Then Peter said, “Surely no one can stand in the way of their being baptized with water. They have received the Holy Spirit just as we have.” So he ordered that they be baptized in the name of Jesus Christ. Then they asked Peter to stay with them for a few days.
Were there infants in the household? Were the infants speaking in tongues and showing signs of being filled with the Holy Spirit? Was the entire household or just the believers baptized?
Acts 16:14-15 – One of those listening was a woman from the city of Thyatira, named Lydia, a dealer in purple cloth. She was a worshiper of God. The Lord opened her heart to respond to Paul’s message. When she and the members of her household were baptized, she invited us to her home. ‘If you consider me a believer in the Lord,’ she said, ‘come and stay at my house.’ And she persuaded us.
Was some or all of the household baptized?
Acts 16:30-34 – He then brought them out and asked, ‘Sirs, what must I do to be saved?’ They replied, ‘Believe in the Lord Jesus, and you will be saved–you and your household.’ Then they spoke the word of the Lord to him and to all the others in his house. At that hour of the night the jailer took them and washed their wounds; then immediately he and all his household were baptized. The jailer brought them into his house and set a meal before them; he was filled with joy because he had come to believe in God–he and his whole household.
“All” his household were baptized and his “whole” household believed. Were there no children too young to believe? Or does “all” and “whole” only include those old enough?
Acts 18:8 – Crispus, the synagogue leader, and his entire household believed in the Lord; and many of the Corinthians who heard Paul believed and were baptized.
His “entire” household believed and “many” were baptized.
1 Corinthians 1:16 – (Yes, I also baptized the household of Stephanas; beyond that, I don’t remember if I baptized anyone else.)
Did this include everyone?
And then of course there is this verse to consider:
Acts 8:12 But when they believed Philip as he proclaimed the good news of the kingdom of God and the name of Jesus Christ, they were baptized, both men and women.
Were there no children in Samaria? Or were only men and women receiving baptism?