Behold, the days come, saith Jehovah, that 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 bring them out of the land of Egypt: which my covenant they brake, although I was a husband unto them, saith Jehovah. But this is the covenant that I will make with the house of Israel after those days, saith Jehovah: I will put my law in their inward parts, and in their hearts will I write it; and I will be their God, and they shall be my people. And they shall teach no more every man his neighbor, and every man his brother, saying, Know Jehovah: for they shall all know me from the least of them unto the greatest of them, saith Jehovah: for I will forgive their iniquity, and their sins will I remember no more. (Jer. 31:31-34.) This shows that a new covenant different from that he made at Sinai would be made. That was a fleshly covenant with the house of Israel, into which they were born by a fleshly birth; but in the new covenant the law was to be written on their hearts, and all were to know him, from the least to the greatest. That is, all must know the law of God, accept it in their hearts before they could become members of the Church of God. So Paul asks: “What then is the law? It was added because of transgressions, till the seed should come to whom the promise hath been made” (Gal. 3:19). The seed that was to come was Christ, and this plainly shows that because of the transgression this law was to continue only until Christ should come. Then the new spiritual covenant was to go into force, and the members of it were all to believe in Christ.