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. The Abrahamic covenant was ratified by the blood of Christ, and it is called the “second,” or “new,” covenant, because the blood by which it was sealed was shed after the blood of the first covenant. That the new covenant was valid in the days of Abraham is evident from the fact that it was then confirmed both by the promise and by the oath of God—the “two immutable things, in which it was impossible for God to lie.” Hebrews 6:18. (PP 371.1) MC VC

But if the Abrahamic covenant contained the promise of redemption, why was another covenant formed at Sinai? In their bondage the people had to a great extent lost the knowledge of God and of the principles of the Abrahamic covenant. In delivering them from Egypt, God sought to reveal to them His power and His mercy, that they might be led to love and trust Him. He brought them down to the Red Sea—where, pursued by the Egyptians, escape seemed impossible—that they might realize their utter helplessness, their need of divine aid; and then He wrought deliverance for them. Thus they were filled with love and gratitude to God and with confidence in His power to help them. He had bound them to Himself as their deliverer from temporal bondage. (PP 371.2) MC VC

But there was a still greater truth to be impressed upon their minds. Living in the midst of idolatry and corruption, they had no true conception of the holiness of God, of the exceeding sinfulness of their own hearts, their utter inability, in themselves, to render obedience to God’s law, and their need of a Saviour. All this they must be taught. (PP 371.3) MC VC

God brought them to Sinai; He manifested His glory; He gave them 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. Now by faith and love they were bound to God as their deliverer from the bondage of sin. Now they were prepared to appreciate the blessings of the new covenant. (PP 371.4) MC VC