Mark 1:7

1:7 He preached, saying, "After me comes he who is mightier than I, the thong of whose sandals I am not worthy to stoop down and loosen.
-World English Bible

Other Translation

1:7 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.
-King James Version