Hebrews 6:17-20

6:17 In the same way God wanted to demonstrate more clearly to the heirs of the promise that his purpose was unchangeable, and so he intervened with an oath, 6:18 so that we who have found refuge in him may find strong encouragement to hold fast to the hope set before us through two unchangeable things, since it is impossible for God to lie. 6:19 We have this hope as an anchor for the soul, sure and steadfast, which reaches inside behind the curtain, 6:20 where Jesus our forerunner entered on our behalf, since he became a priest forever in the order of Melchizedek.