And every priest stands daily at his service, offering repeatedly the same sacrifices, which can never take away sins. But when Christ had offered for all time a single sacrifice for sins, he sat down at the right hand of God, waiting from that time until his enemies should be made a footstool for his feet. For by a single offering he has perfected for all time those who are being sanctified.
And the Holy Spirit also bears witness to us; for after saying,
“This is the covenant that I will make with them after those days, declares the Lord: I will put my laws on their hearts, and write them on their minds,”
then he adds,
“I will remember their sins and their lawless deeds no more.”
Where there is forgiveness of these, there is no longer any offering for sin. (Hebrews 10:11-18, ESV)
Psalm 110 promised that the priest after the order of Melchizedek would sit down at the right hand of God. And Jeremiah prophesied in the new covenant (Jeremiah 31:31ff) that God would put his laws in our hearts and remember our sins no more. But in the old system of the law the priest stood daily and offered the same animal sacrifices that cannot take away sin. No sitting and no lasting forgiveness.
Jesus, on the other hand, is the sitting priest, the one whose sacrifice of himself has forever satisfied the just demands of God who made him a priest forever. He has perfected for all time those who are being made holy. We are both totally forgiven and thus holy before God and being made holy. We have a standing of completion or perfection with God and we have a process of being sanctified. It is the once-for-all sacrifice of the Son that has made this possible.
You and I should trust God when He says we are forgiven by Jesus’ single offering. Why would you not, unless you still feel, arrogantly, that you must do something to contribute to your redemption. I’m sorry, sir, I’m sorry, ma’am, but you have nothing to offer to God that could in any way contribute to your redemption. If you don’t accept that you’ll never be redeemed.
Yes, we know that there is still work to be done in us. We are being sanctified. But that process springs forth from the hand of the one who perfected us for all time. Don’t confuse the two. Yes, be sensitive to sin in your life. But don’t think that beating yourself up or doubling down on your efforts to improve is what is needed to perfect yourself. The sitting priest Jesus has done all that heavy lifting.