“Then He took a cup, and when He had given thanks, He gave it to them, saying, “Drink from it, all of you. This is My Blood of The Covenant, which is poured out for many for the forgiveness of sins.” Matthew 26:27-28
In Matthew 26, The Lord Jesus asks His disciples to drink wine, which represents His Blood, The Blood of The New Covenant. Through His Shed Blood, The Lord Jesus introduced The Covenant of Grace which replaced that of The Law. In The Covenant of Grace, we obtain salvation not through our works, but by God’s Grace, through our faith.
“By calling This Covenant “New,” He has made The First One Obsolete; and what is obsolete and outdated will soon disappear.” Hebrews 8:13
In The Old Covenant, the atonement of sins was done yearly by the sprinkling of the blood of animals (goats, rams, and bulls). The same ritual was repeated every year for the sanctification of the Israelites.
““This is to be a Lasting Ordinance for you: Atonement is to be made once a year for all the sins of the Israelites.” And it was done, as The Lord commanded Moses.” Leviticus 16,34
In The New Covenant, The Sacrifice of The Lord Jesus was performed once and for all for the atonement of all the sins of those who believe in Him. He Is The Perfect Lamb Offered for our sins.
” But when This Priest had offered for all time One Sacrifice for sins, He sat down at The Right Hand Of God, and since that time He waits for His enemies to be made His Footstool. For by One Sacrifice He has made perfect forever those who are being made holy.
The Holy Spirit also testifies to us about this. First He says:
“This is The Covenant I will make with them after that time, says The Lord. I will put My Laws in their hearts, and I will write them on their minds.”
Then He adds:
“Their sins and lawless acts Iwill remember no more.” And where these have been forgiven, sacrifice for sin is no longer necessary.” Hebrews 10:12-18