Actually I did.
Mosaic covenant was not made with Abe, Isaac, and Jacob see Deut. 5:2-3
If God has made the New Covenant with us that he did not make with the Israelites, and it contains at least some of the same laws, then the fact that God made a covenant with the Israelites that He did not make with their fathers does not mean that their fathers did not follow the same laws. For example, it was a sin to commit adultery in Genesis 39:9 long before the Mosaic Covenant, during it, and it remains a sin after it has become obsolete, so that law is eternally valid regardless of which covenant someone is under, if any.
In Matthew 4:17-23, Jesus began his ministry with the Gospel of the Kingdom to repent for the Kingdom of God is at hand, and God's law was the children of Abraham knew what sin is (Romans 3:20), so repenting from our disobedience to it is an integral part of the Gospel message, which was made known in advance to Abraham in accordance with the promise (Galatians 3:8). In Genesis 12:1-5, the promises were made to Abraham to make him a great nation, to bless those who bless him, to curse those who curse him, and in him all of the nations of the earth would be blessed, and he spread this Gospel message to those in Haran. In John 8:39, Jesus said that if they were children of Abraham, then they would be doing the same works as Him, which means that the works that they were instructed by God to do in the Torah were the same works that Abraham was instructed to do. Furthermore, this means that the way to multiply the children of Abraham into a great nation does not refer to having lots of physical descendants, but rather it is multiplied by blessing the nations by teaching them how become children of Abraham by doing the same works as him in accordance with faith in the promise (Romans 9:6-8). In other words, in accordance with the Gospel of the Kingdom, the Kingdom of God is a great nation made up of people who are living blessed lives because they are being taught to turn from their wickedness and how to walk in God's way, and who are multiplied by being a blessing to the nations through teaching them how to do that, and the Torah is how the children of Abraham know how to do that (Psalms 119:1-3).
In Genesis 18:19, God knew Abraham that he would teach his children and those of his household to walk in God's way by doing righteousness and justice that the Lord may bring to him all that he has promised, namely that he will multiply his children as the starts in the heaven, to his children he will give all of these lands, and through his children all of the nations of the earth will be blessed because Abraham heard God's voice and guarded His charge, His commandments, His statutes, and His laws. In Deuteronomy 30:16, if the children of Abraham will love God with all of their heart and soul by obeying His commandments, His statutes, and His laws, then God will bless them and they will multiply in the land that they go to possess. So all of the promises that were made to Abraham in accordance with the Gospel of the Kingdom that was made known in advance to him were made to him and brought about because he walked in God's way in obedience to His law, he taught his children and those of his household to do that, and because his children also did that.
Abraham walked in God's way, he taught his children how to do that, there are many verses that describe the Torah as being instructions for how to walk in God's way, such as Deuteronomy 10:12-13, 1 Kings 2:1-3, Isaiah 2:2-3, Joshua 22:5, Psalms 103:7, and many others, and in Jeremiah 31:33, the New Covenant involves God putting the Torah in our minds and writing it on our hearts, so is this what is being written on your heart?