I do, and I'll give you your answer if you can tell me the covenant which they established (and that is not the covenant under which we now live).
Gladly. It was the Mosaic Covenant which was another conditional one. "If you will indeed obey My Voice and keep my Covenant then you shall be a special treasure to Me above all people, for all the earth is Mine".
This covenant covered three areas of the people and they are (1) their personal lives with how they personally related to God (2) their social lives with how they interacted with each other and finally (3)the ordinances governing their religious lives so that as a nation they were following God on the terms He has declared. This covenant was to condition the people to be ready and able to respond when the Redeemer came.