The Bible is a book of covenants the two major covenant are the old and the new covenant. But sadly Christians don't understand the dividing line between this two am going to make a quick review in few words for easy understanding I hope u are blessed. The books of the old covenant are made up of the laws and the prophets. The prophets reference the law as a guide . But the big picture is this all the old covenant was doing was pointing toward the new covenant in the person of Jesus The new covenant.
The old covenant was not given to Christians, it was not given to the world it's specifically for the Jewish people of Isreal. But the new covenant is for both the Jews and the gentiles the world in general.
Christ is the end of the old thereby established a better covenant.
The old could make no man righteous before God but the new makes us His righteousness.
The old is abolished the new abides for ever.
The old require animal sacrifice while Jesus is the everlasting payment for sin for the whole world lastly but still so much to say
. You can't mix the two together no it never works and never will work. For u cannot put new wine in an old wine skin or bottle. For the old is the fading glory but we are his ever shining glory for ever never fading . For the law was given by Moses but grace and truth came through Jesus . The old is the law the new is grace. Don't try to resurrect what God has buried. I call you blessed.
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