Hebrews 6:13-20

When GOD made a promise to Abraham, he swore by himself since he could not swear by anyone greater. He said, "I will surely bless you, and multiplying I will multiply you." And so, after patiently enduring, he obtained the promise. For men indeed swear by one greater, and an oath is final confirmation in a dispute. GOD was determined to show to the heirs of the promise the immutability of his design, so he confirmed it with an oath. By two unchangeable things, in which it is impossible for GOD to lie, we who have fled for refuge might have strong encouragement to take hold of the hope set before us. This hope is an anchor for the soul, secure and firm, and enters the inner sanctuary where JESUS entered for us as a forerunner having become a high priest after the order of Melchizedek.