“What purpose does the law serve? It was added because of transgressions, till the Seed should come to whom the promise was made; …” (Galatians 3:19, New King James Version)
Some — if not most — people who read the above Bible passage assume that “the law” mentioned here is the law of God that defines what sin is and what righteousness is [see: Barking up the Wrong Tree]. They understand this verse to say that that law of God was added only because man had — beginning with Adam and Eve — “transgressed.” That, before that, there had been no other law. Now that Christ (“the Seed”) has come, that law, supposedly, is no longer necessary.