Covenants are promisses we should be able to reference as truths.
What is the biblical truths we can present about the Old Covenant?
When someone cannot identify the covenants or the covenant that they're under, they may not understand exactly what God requires of them.
Let's present dialog and reference scriptures to identify the Old Covenant.
How could it be any plainer for our fiends who reject these word of Moses -
13 And he declared unto you his covenant, which he commanded you to perform, even ten commandments; and he wrote them upon two tables of stone.
How could it be any plainer for the pronoun you to be misunderstood after reading -
5 And Moses called all Israel, and said unto them, Hear, O Israel, the statutes and judgments which I speak in your ears this day, that ye may learn them, and keep, and do them.
2 The Lord our God made a covenant with us in Horeb.
3 The Lord made not this covenant with our fathers, but with us, even us, who are all of us here alive this day.
Next I can not understand how 1 could miss what applies after reading -
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:
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:
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.
especially after reading the quoted words of Jesus at the last supper and reading the historical record of Acts.