'First Covenant' in the Bible

For, if that first covenant had been faultless, place would not be sought for a second;

Verily, therefore, the first covenant used to have ordinances of divine service, and the sanctuary pertaining to the world.

And, for this cause, He is the Mediator of a new covenant, that, death having taken place for redemption from the transgressions against the first covenant, those who have been called may receive the promise of the eternal inheritance.

Wherefore, not even has the first covenant been dedicated without blood;