NHEB(i)
15 Brothers, I am speaking in human terms. Though it is only a human covenant, once it has been ratified, no one annuls it or adds to it.
16 Now the promises were spoken to Abraham and to his offspring. He does not say, "And to offsprings," as of many, but as of one, "And to your offspring," which is Christ.
17 Now I say this: the law, which came four hundred thirty years later, does not annul a covenant previously ratified by God, so as to cancel the promise.
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 offspring should come to whom the promise has been made. It was ordained through angels by the hand of a mediator.
20 Now a mediator is not between one, but God is one.
21 Is the law then against the promises of God? Certainly not. For if there had been a law given which could give life, most certainly righteousness would have been of the law.