Hebrews 8:6, 12-13

But as it is, Christ has acquired a [priestly] ministry which is more excellent [than the old Levitical priestly ministry], for He is the Mediator (Arbiter) of a better covenant [uniting God and man], which has been enacted and rests on better promises.

“FOR I WILL BE MERCIFUL and GRACIOUS TOWARD THEIR WICKEDNESS, AND I WILL REMEMBER THEIR SINS NO MORE.” [Jer 31:31-34] When God speaks of “A new covenant,” He makes the first one obsolete. And whatever is becoming obsolete (out of use, annulled) and growing old is ready to disappear.