6 Mosaic Covenant Ended

The Abrahamic Covenant was unconditional. That is because of His faith God blessed Abraham and the Jewish people along with the other nations of the earth.

4. Which covenant is the foundation of all 613 laws?
   

Exd 19:5
Now therefore, if ye will obey my voice indeed, and keep my covenant, then ye shall be mine own possession from among all peoples: for all the earth is mine:
Exd 19:6
and ye shall be unto me a kingdom of priests, and a holy nation. These are the words which thou shalt speak unto the children of Israel.

This is the Mosaic Covenant. It is a conditional covenant.

They did not obey the Mosaic Covenant therefore:

Deu 29:25
Then men shall say, Because they forsook the covenant of Jehovah, the God of their fathers, which he made with them when he brought them forth out of the land of Egypt,