17
Now I say this. A covenant confirmed beforehand by God in Christ, the law, which came four hundred and thirty years after, does not annul, so as to make the promise of no effect.
18
For if the inheritance is of the law, it is no more of promise; but God has granted it to Abraham by promise.
19
What then is the law? It was added because of transgressions, until the seed should come to whom the promise has been made. It was ordained through angels by the hand of a mediator.