Hebrews 6:16 in the King James Version
For men verily swear by the greater: and an oath for confirmation is to them an end of all strife.
Context
15 Thus, having patiently endured, he obtained the promise.
16 For men indeed swear by a greater one, and in every dispute of theirs the oath is final for confirmation.
17 In this way God, being determined to show more abundantly to the heirs of the promise the immutability of his counsel, interposed with an oath,