Leviticus 16:15-19

Lev 16:15 “Then he will kill the goat of the mistake offering that is for the people and bring its blood inside the veil and do with its blood as he did with the blood of the bull, spritzing it over the mercy seat and in front of the mercy seat.
Lev 16:16 Thus he will provide reconciliation for the Holy Place, because of the contamination of the people of Israel and because of their transgressions, all their mistakes. And so he will do for the conference tent, which dwells with them in the midst of their contamination.
Lev 16:17 No human may be in the conference tent from the time he enters to provide reconciliation in the Holy Place until he comes out and has provided reconciliation for himself and for his house and for all the collected assembly of Israel.
Lev 16:18 Then he will go out to the altar that is in Yahveh’s sight and provide reconciliation for it, and will take some of the blood of the bull and some of the blood of the goat, and put it on the horns of the altar all around.
Lev 16:19 And he will spritz some of the blood on it with his finger seven times, and cleanse it and consecrate it from the contamination of the people of Israel.

apply the blood

Even a holy place and a holy altar are defiled by a sinful and rebellious people. So, Aaron had to cleanse the mercy seat and the altar with the blood of the sacrifice that was to bring forgiveness to the collected assembly. God cannot tolerate the presence of sin. Hell will destroy sin and sinners because God cannot tolerate it for eternity. It is a mockery of the perfection he created. But hell is completely unnecessary. The blood of the sacrifice atoned for the imperfection in the tabernacle because of human sin. So, the blood of Christ is all that is needed to cleanse the universe from the consequences of Eden. But that blood must be applied. Sinner, apply the blood of Christ to your life. If you do not, hell awaits, because our God is holy, and he will not tolerate sin forever.

LORD, thank you for the remedy of our imperfection and rebellion: the blood of Christ.