Hebrews 7:23-28
23 “The former priests, on the one hand, existed in greater numbers because they were prevented by death from continuing; 24Jesus, on the other hand, because He continues forever, holds His priesthood permanently. 25 Therefore He is also able to save forever those who come to God through Him, since He always lives to make intercession for them.26 For it was fitting for us to have such a High Priest, holy, innocent, undefiled, separated from sinners, and exalted above the heavens; 27 who has no daily need, like those High Priests, to offer up sacrifices, first for His own sins and then for the sins of the people, because He did this once for all time when He offered up Himself. 28 For the Law appoints men as High Priests who are weak, but the word of the oath, which came after the Law, appoints a Son, who has been made perfect forever.”
Save forever: Jesus is a permanent High Priest because He lives forever. Because Jesus always lives, believers are always saved. Our salvation is wholly and completely secure in Christ.
Once for all time: Jesus did not need to offer Himself repeatedly as was the case in the Old Testament. Jesus offered Himself once and it was such a perfect sacrifice that it removed our sins forever.
