LEB(i)
16 Now to Abraham and to his descendant the promises were spoken. It does not say, "and to descendants," as concerning many, but as concerning one, "and to your descendant,"* who is Christ.
17 Now I am saying this: the law, that came after four hundred and thirty years, does not revoke a covenant previously ratified by God, in order to nullify the promise.
18 For if the inheritance is from the law, it is no longer from the promise, but God graciously gave it to Abraham through the promise.
19 Why then the law? It was added on account of transgressions, until the descendant should come to whom it had been promised, having been ordered through angels by the hand of a mediator.