That There Will Be a New Covenant
Old Testament prophecies that, instead of the Covenant with the Jewish people, which they broke, a New Covenant will be made with a new people:
“But Jeshurun grew fat and kicked; you grew fat, you grew thick, you are obese! Then he forsook God who made him, and scornfully esteemed the Rock of his salvation. They provoked Him to jealousy with foreign gods; with abominations they provoked Him to anger. They sacrificed to demons, not to God, to gods they did not know, to new gods, new arrivals that your fathers did not fear. Of the Rock who begot you, you are unmindful, and have forgotten the God who fathered you. And when the LORD saw it, He spurned them, because of the provocation of His sons and His daughters. And He said: ‘I will hide My face from them, I will see what their end will be, for they are a perverse generation, children in whom is no faith. They have provoked Me to jealousy by what is not God; they have moved Me to anger by their foolish idols. But I will provoke them to jealousy by those who are not a nation; I will move them to anger by a foolish nation’” (Deut. 32:15-21)
“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 — 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. 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. <…> If those ordinances depart from before Me, says the LORD, then the seed of Israel shall also cease from being a nation before Me forever. Thus says the LORD: If heaven above can be measured, and the foundations of the earth searched out beneath, I will also cast off all the seed of Israel for all that they have done, says the LORD” (Jer. 31:31-33,36-37)
“I was sought by those who did not ask for Me; I was found by those who did not seek Me. I said, ‘Here I am, here I am,’ to a nation that was not called by My name” (Is. 65:1)
“Then I will sow her for Myself in the earth, and I will have mercy on her who had not obtained mercy; then I will say to those who were not My people, ‘You are My people!’ And they shall say, ‘You are my God!’” (Hos. 2:23)
On the End of the Old Covenant
“Because finding fault with them, He says: ‘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’ <…> In that He says, ‘A new covenant,’ He has made the first obsolete. Now what is becoming obsolete and growing old is ready to vanish away” (Heb. 8:8,13)
“But their minds [of the Jews] were blinded. For until this day the same veil remains unlifted in the reading of the Old Testament, because the veil is taken away in Christ. But even to this day, when Moses is read, a veil lies on their heart. Nevertheless when one turns to the Lord, the veil is taken away” (2 Cor. 3:14-16)
“who also made us sufficient as ministers of the new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life” (2 Cor. 3:6)
“But now we have been delivered from the law, having died to what we were held by, so that we should serve in the newness of the Spirit and not in the oldness of the letter” (Rom. 7:6)
“But before faith came, we were kept under guard by the law, kept for the faith which would afterward be revealed. Therefore the law was our tutor to bring us to Christ, that we might be justified by faith. But after faith has come, we are no longer under a tutor” (Gal. 3:23-25)
A Warning Not to Use Christian Freedom for Evil:
“For you, brethren, have been called to liberty; only do not use liberty as an opportunity for the flesh, but through love serve one another” (Gal. 5:13)