250. Verse 15. And I will put enmity between thee and the woman, and between thy seed and her seed; He shall trample upon thy head, and thou shalt bruise His heel. Everyone is aware that this is the first prophecy of the Lord’s advent into the world; it appears indeed clearly from the words themselves, and therefore from them and from the prophets even the Jews knew that a Messiah was to come. Hitherto however no one has understood what is specifically meant by the “serpent” the “woman” the “serpent’s seed” the “woman’s seed” the “head of the serpent which was to be trodden upon” and the “heel which the serpent should bruise.” They must therefore be explained. By the “serpent” is here meant all evil in general, and specifically the love of self; by the “woman” is meant the church; by the “seed of the serpent” all infidelity; by the “seed of the woman” faith in the Lord; by “He” the Lord Himself; by the “head of the serpent” the dominion of evil in general, and specifically that of the love of self; by to “trample upon” depression, so that it should “go upon the belly and eat dust;” and by the “heel” the lowest natural (as the corporeal), which the serpent should “bruise.”

60. That the stone tablets on which the law was written were called the Tablets of the Covenant, and that because of them the Ark was called the Ark of the Covenant, the law itself being the covenant, see Numbers 10:33; Deuteronomy 4:13, 23, 5:2-3, 9:9; Joshua 3:11; 1 Kings 8:19, 21; Revelation 11:19. And many other places.

The law was called a covenant because a covenant symbolizes conjunction. We are accordingly told regarding the Lord that He would be “as a covenant to the people” (Isaiah 42:6, 49:8). He is called, too, “the Messenger of the covenant” (Malachi 3:1), and His blood “the blood of the covenant” (Matthew 26:28, Zechariah 9:11, Exodus 24:4-10). That is why the Word is called the Old Covenant and New Covenant.

Covenants are also made as testaments of love, friendship, and fellowship, thus for the sake of conjunction.