Jeremiah 31:23 – 37, Hebrews 8:1 – 13
Jeremiah 31:31–34 (NKJV)
31 “Behold, the days are coming, says the Lord, when I will make a new covenant with the house of Israel and with the house of Judah—32 not according to the covenant that I made with their fathers in the day that I took them by the hand to lead them out of the land of Egypt, My covenant which they broke, though I was a husband to them, says the Lord. 33 But this is the covenant that I will make with the house of Israel after those days, says the Lord: I will put My law in their minds, and write it on their hearts; and I will be their God, and they shall be My people. 34 No more shall every man teach his neighbor, and every man his brother, saying, ‘Know the Lord,’ for they all shall know Me, from the least of them to the greatest of them, says the Lord. For I will forgive their iniquity, and their sin I will remember no more.”
I Covenant broken
II The blessings of the new covenant
III The mediator and beneficiaries of the new covenant
Luke 22:20 (NKJV)
20 Likewise He also took the cup after supper, saying, “This cup is the new covenant in My blood, which is shed for you.
Romans 3:25 (NKJV)
25 whom God set forth as a propitiation by His blood, through faith, to demonstrate His righteousness, because in His forbearance God had passed over the sins that were previously committed,
The Heidelberg Catechism
Question 76. What is it to eat the crucified body and drink the shed blood of Christ?
It is not only to embrace with a believing heart all the sufferings and death of Christ, and thereby to obtain the forgiveness of sins and life eternal; but moreover also, to be so united more and more to His sacred body by the Holy Ghost, who dwells both in Christ and in us, that although He is in heaven, and we on the earth, we are nevertheless flesh of His flesh and bone of His bones, and live and are governed for ever by one Spirit, as members of the same body are by one soul.
John 6:54. Whoso eateth My flesh, and drinketh My blood, hath eternal life.