Genesis 22:16

and said, 'I swear by myself, declares the LORD, that because you have done this and have not withheld your son, your only son,

(New International Version)

and said, 'By Myself I have sworn, declares the LORD, because you have done this thing and have not withheld your son, your only son,

(New American Standard Bible)

And said, By myself have I sworn, saith the LORD, for because thou hast done this thing, and hast not withheld thy son, thine only son:

(King James Version)