Hebrews 6:18-20

So God has given both his promise and his oath. These two things are unchangeable because it is impossible for God to lie. Therefore, we who have fled to him for refuge can have great confidence as we hold to the hope that lies before us. This hope is a strong and trustworthy anchor for our souls. It leads us through the curtain into God’s inner sanctuary. Jesus has already gone in there for us. He has become our eternal High Priest in the order of Melchizedek.