'I Am Not Worthy' in the Bible

I indeed baptize you with water to lead you to repentance; but he that cometh after me, is my superiour, whose shoes I am not worthy to carry: he shall baptize you with the effusion of the holy Ghost, in the appearance of fire:

the centurion answered, Lord, I am not worthy the honour of such a visit: do but give the word, and my servant is sav'd.

among other things he said, there comes one after me, who is superiour to me, I am not worthy to stoop down and untie his shoes.

is preferred before me, the latchet of whose sandals I am not worthy to unloose.

and in the discharge of his mission, he said, "who do you think I am? I am not the Messias. but there comes another after me, whose shoes I am not worthy to untie."