John 1:27

even he that cometh after me, the latchet of whose shoe I am not worthy to unloose.

John 1:30

This is he of whom I said, After me cometh a man who is become before me: for he was before me.

Matthew 3:11

I 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:

John 1:15

John beareth witness of him, and crieth, saying, This was he of whom I said, He that cometh after me is become before me: for he was before me.

Mark 1:7

And he preached, saying, There cometh after me he that is mightier than I, the latchet of whose shoes I am not worthy to stoop down and unloose.

Luke 3:16

John answered, saying unto them all, I indeed baptize you with water; but there cometh he that is mightier than I, the latchet of whose shoes I am not worthy to unloose: he shall baptize you in the Holy Spirit and in fire:

Acts 19:4

And 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.

Treasury of Scripture Knowledge

Summary

He it is, who coming after me is preferred before me, whose shoe's latchet I am not worthy to unloose.

General references

Bible References

Who

John 1:15
John beareth witness of him, and crieth, saying, This was he of whom I said, He that cometh after me is become before me: for he was before me.
Acts 19:4
And 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.

Whose

Matthew 3:11
I 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:
Mark 1:7
And he preached, saying, There cometh after me he that is mightier than I, the latchet of whose shoes I am not worthy to stoop down and unloose.
Luke 3:16
John answered, saying unto them all, I indeed baptize you with water; but there cometh he that is mightier than I, the latchet of whose shoes I am not worthy to unloose: he shall baptize you in the Holy Spirit and in fire:

General references

Mark 1:7
And he preached, saying, There cometh after me he that is mightier than I, the latchet of whose shoes I am not worthy to stoop down and unloose.
John 1:30
This is he of whom I said, After me cometh a man who is become before me: for he was before me.

American Standard Version Public Domain