Acts 19:3

He then asked, "With what sort of baptism then were you baptized?" They answered, "With John's baptism."

Acts 18:25

He had been instructed about the way of the Lord, and with spiritual fervor he was speaking and was accurately teaching some details about Jesus, although he knew of no baptism but John's.

Matthew 28:19

Go then and make disciples of all the nations, baptize them into the name of the Father, the Son, and the Holy Spirit,

Matthew 3:1-17

In those days John the Baptist appeared, and kept preaching in the desert of Judea,

Luke 3:1-38

In the fifteenth year of the reign of the Emperor Tiberius, when Pontius Pilate was governor of Judea, and Herod was governor of Galilee, and his brother Philip was governor of the territory of Iturea and Trachonitis, and Lysanias was governor of Abilene,

Acts 8:16

for as yet He had not come upon any of them, but they had been baptized merely in the name of the Lord Jesus.

1 Corinthians 12:13

For by one Spirit all of us, Jews or Greeks, slaves or freemen, have been baptized into one body, and were all imbued with one Spirit.

Treasury of Scripture Knowledge

Summary

And he said unto them, Unto what then were ye baptized? And they said, Unto John's baptism.

Unto john's

General references

Bible References

Unto what

Matthew 28:19
Go then and make disciples of all the nations, baptize them into the name of the Father, the Son, and the Holy Spirit,
1 Corinthians 12:13
For by one Spirit all of us, Jews or Greeks, slaves or freemen, have been baptized into one body, and were all imbued with one Spirit.

Unto john's

Acts 18:25
He had been instructed about the way of the Lord, and with spiritual fervor he was speaking and was accurately teaching some details about Jesus, although he knew of no baptism but John's.

General references

Acts 13:24
as John, before His coming, had already preached baptism as an expression of repentance, for all the people of Israel.