Hebrews 7:25

Wherefore He is able also to save them to the uttermost that come unto God by Him, seeing He ever liveth to make intercession for them.

This is a point in which the superiority of Christ is very evident. Christ not only brought us back again into the right relation with God, but He permanently insured to us this near fellowship with God: And they indeed have been made priests many in number, because of their being prevented by death from remaining, but He through His remaining forever has His priesthood inviolable. It was a definite and unchangeable handicap of the men that held the office of priests in the Old Testament: they were mortal, subject to death, they could not remain in life, and therefore also in office, beyond the span of life allotted to them by God. The ones that died were continually being replaced by young men, and there was a continual change in personnel. But Christ, the everlasting Son of God, Psalms 110:4; Daniel 7:14; John 12:34, holds His office of High Priest throughout eternity. It will never he transferred, no other person will ever step into it. He is the sole and perpetual occupant of this singular office, giving place to no successor. And therefore it follows: Whence He is also able even to save to the uttermost those who through Him approach to God, forever living to make intercession for them. Because Christ holds His office of High Priest in this unique and absolute manner, therefore the salvation earned by Him is complete in every detail, not lacking in any single item. Every person in the wide world that turns to Christ for salvation, puts his faith in Him as his Mediator, has Him as the Way, as the certain Approach to God. No need of priests and sacrifices and ceremonies and special festivals, for He is our Mediator forever; He has opened the way to the eternal love of the Father. This is so certain because Christ lives forever, and His function in His office of High Priest at the present time is to be our Advocate with the Father, to make intercession for us, Romans 8:34; 1 John 2:1. As Christ's life on earth was spent in the interest of men, so He continues to spend Himself in our behalf. The entire fullness of His present life is devoted to the end of insuring everlasting salvation to men. And we have another reason for acknowledging the superiority of Christ's office over that of the Old Testament priests.