Mark 1:7 in the King James Version
And preached, saying, There cometh one mightier than I after me, the latchet of whose shoes I am not worthy to stoop down and unloose.
Context
6 John was clothed with camel’s hair and a leather belt around his waist. He ate locusts and wild honey.
7 He preached, saying, “After me comes he who is mightier than I, the strap of whose sandals I am not worthy to stoop down and loosen.
8 I baptized you in water, but he will baptize you in the Holy Spirit.”