Knowing that a man is not justified by the works of the law, but by the faith of Jesus Christ, even we have believed in Jesus Christ, that we might be justified by the faith of Christ, and not by the works of the law: for by the works of the law shall no flesh be justified. Galatians 2:16. The Faith I Live By 78.1

Another compact—called in Scripture the “old” covenant—was formed between God and Israel at Sinai, and was then ratified by the blood of a sacrifice…. FLB 78.2

God … gave them [Israel] His law, with the promise of great blessings on condition of obedience: “If ye will obey my voice indeed, and keep my covenant, then … ye shall be unto me a kingdom of priests, and an holy nation.” Exodus 19:5, 6. The people did not realize the sinfulness of their own hearts, and that without Christ it was impossible for them to keep God’s law; and they readily entered into covenant with God. Feeling that they were able to establish their own righteousness, they declared, “All that the Lord hath said will we do, and be obedient.” Exodus 24:7. They had witnessed the proclamation of the law in awful majesty, and had trembled with terror before the mount; and yet only a few weeks passed before they broke their covenant with God, and bowed down to worship a graven image. They could not hope for the favor of God through a covenant which they had broken; and now, seeing their sinfulness and their need of pardon, they were brought to feel their need of the Saviour revealed in the Abrahamic covenant, and shadowed forth in the sacrificial offerings…. FLB 78.3

The terms of the “old covenant” were, Obey and live: “If a man do, he shall even live in them;” but “cursed be he that confirmeth not all the words of this law to do them.”Ezekiel 20:11; Leviticus 18:5; Deuteronomy 27:26. The “new covenant” was established upon “better promises”—the promise of forgiveness of sins, and of the grace of God to renew the heart, and bring it into harmony with the principles of God’s law. FLB 78.4

The only means of salvation is provided under the Abrahamic covenant. FLB 78.5