Hebrews 8:6 But now hath he obtained a more excellent ministry, by how much also he is the mediator of a better covenant, which was established upon better promises. 7 For if that first covenant had been faultless, then should no place have been sought for the second.
[Patriarchs & Prophets pp 371] 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. 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.
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 Savior. All this they must be taught. 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.
Hebrews 8:10 For this is the covenant that I will make after those days, saith the Lord; I will put my laws into their mind, and write them in their hearts: and I will be to them a God, and they shall be to me a people: 11 And they shall not teach every man his neighbor, and every man his brother, saying, Know the Lord: for all shall know me, from the least to the greatest.
May The Lord add His blessing to the study of His word. God bless!