Original Verse:
Acts Chapter 19 Verse 4And Paul said, John baptized with the baptism of repentance, saying unto the people that they should believe on him that should come after him, that is, on Jesus.

Reference Verses:
Acts Chapter 13 Verse 24when John had first preached before his coming the baptism of repentance to all the people of Israel.
Acts Chapter 13 Verse 24-25 [24] when John had first preached before his coming the baptism of repentance to all the people of Israel. [25] And as John was fulfilling his course, he said, What suppose ye that I am? I am not [he]. But behold, there cometh one after me the shoes of whose feet I am not worthy to unloose.
Mark Chapter 1 Verse 4John came, who baptized in the wilderness and preached the baptism of repentance unto remission of sins.
Mark Chapter 1 Verse 1-4 [1] The beginning of the gospel of Jesus Christ, the Son of God. [2] Even as it is written in Isaiah the prophet, Behold, I send my messenger before thy face, Who shall prepare thy way. [3] The voice of one crying in the wilderness, Make ye ready the way of the Lord, Make his paths straight; [4] John came, who baptized in the wilderness and preached the baptism of repentance unto remission of sins.
Acts Chapter 1 Verse 22beginning from the baptism of John, unto the day that he was received up from us, of these must one become a witness with us of his resurrection.
John Chapter 1 Verse 7The same came for witness, that he might bear witness of the light, that all might believe through him.
Matthew Chapter 3 Verse 11I indeed baptize you in water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you in the Holy Spirit and [in] fire:
Matthew Chapter 11 Verse 3and said unto him, Art thou he that cometh, or look we for another?
Luke Chapter 3 Verse 3And he came into all the region round about the Jordan, preaching the baptism of repentance unto remission of sins;