WPNT(i)
19 Why then the law? It was added on account of the transgressions, until the Seed should come to whom the inheritance had been promised; and it was ordered through angels by the hand of a mediator.
20 (Now that mediator is not for just one, but God is one.)
21 Is the law then against the promises of God? Of course not! Rather, if a law had been given that was capable of imparting life, truly righteousness would have been by the law.