These verses serve to introduce the high priesthood of Christ, one of the major themes of the letter. Much of what’s introduced in summary here is filled out in the following chapters. The doctrine of the humanity of Christ is fundamental to the complete, eternal salvation we receive in him. Jesus, fully God and fully human, knows our weaknesses. Not only can he represent us to God, he can bring us right into the majestic and holy presence of God. And when that happens it’s for keeps.