King James Version
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:English Standard Version
and said, "By myself I have sworn, declares the LORD, because you have done this and have not withheld your son, your only son,Catholic Public Domain Version
"By my own self, I have sworn, says the Lord. Because you have done this thing, and have not spared your only begotten son for my sake