ISB ~ Galatians 3 v15 - 18
The major premise of Paulās covenant theology in Galatians, namely, that Israelās failure to keep the Mosaic covenant did not relieve God of his prior obligation to fulfill the Abrahamic covenant ratified centuries earlier. Since even human covenants are inviolable once they are ratified by oath, the covenant oath that God swore to Abraham is even more so (Gen 22:16-18; Heb 6:13-18). Not even the ratification of subsequent covenants under Moses could alter or annul Godās unconditional pledge to bless the world through Abrahamās offspring. In effect, then, the Abrahamic covenant both precedes and supercedes the Mosaic covenant that came after it.