TSK · Isaiah 66:21

But you shall be named the priests of Yahweh; men will call you the ministers of our God: you will eat the wealth of the nations, and you will boast in their glory.

For the priesthood being changed, there is of necessity a change made also in the law.

But you are a chosen race, a royal priesthood, a holy nation, a people for God's own possession, that you may proclaim the excellence of him who called you out of darkness into his marvelous light:

and made us kings and priests to our God, and we will reign on earth."