Hebrews 6:18 in the King James Version
That by two immutable things, in which it was impossible for God to lie, we might have a strong consolation, who have fled for refuge to lay hold upon the hope set before us:
Context
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,
18 that by two immutable things, in which it is impossible for God to lie, we may have a strong encouragement, who have fled for refuge to take hold of the hope set before us.
19 This hope we have as an anchor of the soul, a hope both sure and steadfast and entering into that which is within the veil,