Messianic Prophecy: Atonement through the sacrifice of blood:

Prophecy:

and the priest shall offer them, one for a sin offering and the other for a burnt offering. So the priest shall make atonement on his behalf before the LORD because of his discharge.

‘Now if a man has a seminal emission, he shall bathe all his body in water and be unclean until evening. As for any garment or any leather on which there is seminal emission, it shall be washed with water and be unclean until evening.

Leviticus 15:15-17

Fulfillment:

whom God displayed publicly as a propitiation in His blood through faith. This was to demonstrate His righteousness, because in the forbearance of God He passed over the sins previously committed;

Romans 3:25

Now even the first covenant had regulations of divine worship and the earthly sanctuary. For there was a tabernacle prepared, the outer one, in which were the lampstand and the table and the sacred bread; this is called the holy place. Behind the second veil there was a tabernacle which is called the Holy of Holies, having a golden altar of incense and the ark of the covenant covered on all sides with gold, in which was a golden jar holding the manna, and Aaron’s rod which budded, and the tables of the covenant; and above it were the cherubim of glory overshadowing the mercy seat; but of these things we cannot now speak in detail.
Now when these things have been so prepared, the priests are continually entering the outer tabernacle performing the divine worship, but into the second, only the high priest enters once a year, not without taking blood, which he offers for himself and for the sins of the people committed in ignorance. The Holy Spirit is signifying this, that the way into the holy place has not yet been disclosed while the outer tabernacle is still standing, which is a symbol for the present time. Accordingly both gifts and sacrifices are offered which cannot make the worshiper perfect in conscience, since they relate only to food and drink and various washings, regulations for the body imposed until a time of reformation.

But when Christ appeared as a high priest of the good things to come, He entered through the greater and more perfect tabernacle, not made with hands, that is to say, not of this creation; and not through the blood of goats and calves, but through His own blood, He entered the holy place once for all, having obtained eternal redemption. For if the blood of goats and bulls and the ashes of a heifer sprinkling those who have been defiled sanctify for the cleansing of the flesh, how much more will the blood of Christ, who through the eternal Spirit offered Himself without blemish to God, cleanse your conscience from dead works to serve the living God?

Hebrews 9:1-14

For Christ did not enter a holy place made with hands, a mere copy of the true one, but into heaven itself, now to appear in the presence of God for us;

Hebrews 9:24

and He Himself is the propitiation for our sins; and not for ours only, but also for those of the whole world.

1 John 2:2