Hebrews 6:17-18

CLV(i) 17 in which God, intending more superabundantly to exhibit to the enjoyers of the allotment of the promise the immutability of His counsel, interposes with an oath, 18 that by two immutable matters, in which it is impossible for God to lie, we may have a strong consolation, who are fleeing for refuge to lay hold of the expectation lying before us,