Hebrews 6:18-20 NASB (emphasis mine):
so that by two unchangeable things in which it is impossible for God to lie, we who have taken refuge would have strong encouragement to take hold of the hope set before us. This hope we have as an anchor of the soul, a hope both sure and steadfast and one which enters within the veil, where Jesus has entered as a forerunner for us, having become a high priest forever according to the order of Melchizedek.
What is this hope that is referred to multiple times in the passage? It is described vividly but I do not see it defined. Is the author referring to the promise from verse 14?