New Revised Standard Version
Then he said, “Into what then were you baptized?” They answered, “Into John’s baptism.”

Contemporary English Version
"Then why were you baptized?" Paul asked. They answered, "Because of what John taught."

New American Bible
He said, “How were you baptized?” They replied, “With the baptism of John.”

Douay-Rheims Bible
And he said: In what then were you baptized? Who said: In John's baptism.

And he said: In what then were you baptized? Who said: In John's baptism.

Unto what.

Matthew 28:19 Going therefore, teach ye all nations: baptizing them in the name of the Father and of the Son and of the Holy Ghost.

1 Corinthians 12:13 For in one Spirit were we all baptized into one body, whether Jews or Gentiles, whether bond or free: and in one Spirit we have all been made to drink.

Unto John's.

Acts 18:25 This man was instructed in the way of the Lord: and being fervent in spirit, spoke and taught diligently the things that are of Jesus, knowing only the baptism of John.

Matthew 3:1-17 And in those days cometh John the Baptist preaching in the desert of Judea. . . .

Luke 3:1-38 Now in the fifteenth year of the reign of Tiberius Caesar, Pontius Pilate being governor of Judea, and Herod being tetrarch of Galilee, and Philip his brother tetrarch of Iturea and the country of Trachonitis, and Lysanias tetrarch of Abilina: . . .