Hebrews 7:18-21

KJ2000(i) 18 For there is verily an annulment of the previous commandment because of the weakness and uselessness thereof. 19 For the law made nothing perfect, but the bringing in of a better hope did; by which we draw near unto God. 20 And since it was not without an oath he was made priest: 21 (For those priests were made without an oath; but this with an oath by him that said unto him, The Lord swore and will not change, you are a priest forever after the order of Melchizedek:)