Hebrews 7:18-21

The old order of priesthood has been set aside as weak and powerless. For the law has never made anyone perfect, but in its place is a far better hope which gives us confidence to experience intimacy with God! And he confirmed it to us with his solemn vow. For the former priests took their office without an oath, but with Jesus, God affirmed his royal-priesthood with his promise, saying, The Lord has made a solemn oath and will never change his mind, “You are a King-Priest forever!”