Your not being obtuse just not seeing all there is to see The Old Covenant is not out of existence because God promised Abraham that his children and their inheritance would become as numerous as the stars of the heavens and the sands of the sea, and continue forever.Hebrews 8:7 "For if that first covenant had been faultless, then should no place have been sought for the second."There was no fault in that first covenant, other then that first covenant was to become a type of what would come to pass later. It was not God that broke any part of that covenant, but it was man that broke away from that covenant with God. That is why we need repentance, for all men fall short and need repentance. Hebrews 8:8 "For finding fault with them, He saith, "Behold, the days come, saith the Lord, when I will make a new covenant with the house of Israel and with the house of Judah:"This promise was stated in Jeremiah 31:31; "Behold, the days come, saith the Lord, that I will make a new covenant with the house of Israel, and with the house of Judah:"Jeremiah 31:32 "Not according to the covenant that I made with their fathers in the day that I took them by the hand to bring them out of the land of Egypt; which My covenant they brake, although I was an husband unto them, saith the Lord:"Jeremiah 31:33 "But this shall be the covenant that I will make with the house of Israel; After those days, saith the Lord, I will put My law in their inward parts, and write it in their hearts; and will be their God, and they shall be My People."Jeremiah 31:34 "And they shall teach no more every man his neighbour, and every man his brother, saying, `Know the Lord:' for they shall all know Me, from the least of them unto the greatest of them, saith the Lord: for I will forgive their iniquity, and I will remember their sin no more."This is an Old Testament promise that has not come to pass yet, Hebrews 8:9 "Not according to the covenant that I made with their father in the day when I took them by the hand to lead them out of the land of Egypt: because they continued not in My covenant, and I regarded them not, saith the Lord."Hebrews 8:10 "For this is the covenant that I will make with the house of Israel 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:"We read this from Jeremiah 31 earlier, and this event has not come to pass yet. This is looking forward to the Millennium age, as recorded in Ezekiel chapters 40 - 48. When we look around the world today, even the Christian world, the people are Biblically illiterate. When this time comes God will no longer call the House of Israel, "not My people", but He will claim them for Himself. Hebrews 8:11 "And they shall not teach every man his neighbour, and every man his brother, saying, Know the Lord: for all shall know Me, from the least to the greatest."This is talking about the Millennium age, the time when Satan will be thrown in the pit, and all evil rudiments of this age are eliminated. It is talking about a time when all people will be changed into their spiritual bodies, and there will be no sickness nor deformities, and all souls will have full understanding. What did God say that He would put in all peoples minds, from the least to the greatest? The Law, God's law that is unchanging, so don't you dare tell me that the law is done away with, for that will be the one thing that controls all person's actions, that law will be the core of their thoughts and desires. Today we need teachers to teach us of the laws of God, and what we should and should not do nor say, but in the Millennium age there will be no need for the law to be taught, for everyone will know God's law. It will be as natural to them as putting on your shoes when you leave you house, or turning the key when you start your car. Then what will be taught in the Millennium age then if every one knows God's law? Discipline and obedience, for it will seem that God's children have always been very inadequate in following the laws that God has given them. We seem to be all wrapped up in man's laws of precedence today that change with the morals of the day. To find out what this Millennium age will be like, we must go to Ezekiel 44:23; "And they shall teach My People the difference between the holy and profane, and cause them to discern between the unclean and the clean." Ezekiel 44:24 "And in controversy they shall stand in judgment; and they shall judge it according to My judgments: and shall keep My laws and My statutes in all Mine assemblies; and they shall hallow My sabbaths."With the laws the focus in their minds, the object will be to keep those laws, and be able to understand the difference between the clean and the unclean, and this take disciplineHebrews 8:12 "For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more."This verse is directed to that Millennium age, the age of teaching discipline and obedience. God is going to be more then fare to those that were unrighteous in this world age of the flesh. God is going to be merciful to all of those unrighteous people, but we all fall short of the laws of God. This is that time when every knee shall bow to Christ on that first day of the Millennium, all of the people that fell short will see the sins they have committed and be ashamed of them. However this is not to say that they will not fall away again by the end of the Millennium age when Satan is released again to try and test those people again. In the Millennium age you will also be given a choice and free will to go the way that you will go. For it will be by their works only [of the unsaved] at the end of the Millennium age that God will judge you, for the age of Grace that we are in now will end with the return of Jesus Christ. The time of the writing of names in the Lamb's "book of life" will be over at the end and close of this age of the flesh. Then those that have there names written there will never be judged by any sin, but they will receive their eternal rewards on that first day of the Millennium age, at the sounding of the seventh trumpet.Hebrews 8:13 "In that He saith, "A New Covenant," He hath made the first old, Now that which decayeth and waxeth old is ready to vanish away."Remember that we have been talking about an Old Covenant and a New Covenant. The Old Covenant was a tent that went all the way back to the original tabernacle with Moses in the wilderness. Moses built the original tent out of cloth that rotted away after years, with all it's fancy trim. That tent was symbolic, but what is the New Covenant? Christ said, "destroy this Temple, and I will rebuild it in three days." That Temple is made up of both His body, and the many membered body that is made up of every soul that believes on Christ, and has the blood of Christ covering their sins through repentance. My friend, this New Covenant will never get old, for it is an eternal Covenant. It is the only eternal thing that there is, and it pertains only to our Heavenly Father and those that overcame. No matter what man builds or establishes, it gets old and worn out. It will age even if it is made of stone, because the pollutions that man makes will soon eat the stone away. But God, in the body of Christ built a temple that shall never age, and it shall refurbish itself through repentance, in that when you repent, the aged pollution of the guilt of sin is washed clean, and marked paid in full by the blood of Christ.None of this in any way replaces the O.T. in fact we have to refer back to the O.T. to see what the prochecys/promises were