<p>3:15- see on 1 Cor. 15:57.</p><p><i>Brothers, I speak in human terms. Though it be but a man's covenant, yet when it has been confirmed, no one makes it void, or adds thereto</i>- The confirmation of the covenant was 'previous' to the giving of the Law of Moses (:17). The confirmation was in the fact that God made an oath by Himself (Heb. 6:13-18); the promise itself, and then His word of oath, made two immutable things in which it was impossible for God to lie. The simple covenant of salvation was that anyone who believed the promises to Abraham and associated themselves with his seed will be eternally saved and blessed. Nothing has been added or subtracted from that ever since it was given. The Lord's death was yet another act of confirming that covenant, and appealing to men and women to believe it and participate in it; but His life and death did not of themselves add anything to the salvation covenant promise given to Abraham, and which forms the basis of the Gospel. And likewise, the law of Moses did not void nor add to that covenant.</p>