“But because [Christ] remains forever, He holds His priesthood permanently. Therefore, He is always able to save those who come to God through Him, since He always lives to intercede for them.”
Under the old covenant, the priest literally stands between the people and God. Annually, the priest offers an unblemished lamb as a sacrificial substitute for the people, their sins burning up along with the body of the lamb, the sweet fragrance satisfying the wrath of the Lord. The people come to God through the priest; God accepts them because of the lamb.
The author of Hebrews may as well shout. For under the new covenant — the better covenant — the priest “remains forever,” and “always lives to intercede for [the people].” Under the new covenant — the final covenant — the priest is the Lamb! And, the sacrifice is once for all. And, the Priest lives forever, always able to intercede for each and every one “who comes to God through Him.”