Hebrews 7:19

16 who came not according to the law of a fleshly command, but according to the power of an endless life,

17 for He doth testify -- `Thou [art] a priest -- to the age, according to the order of Melchisedek;`

18 for a disannulling indeed doth come of the command going before because of its weakness, and unprofitableness,

19 (for nothing did the law perfect) and the bringing in of a better hope, through which we draw nigh to God.

20 And inasmuch as [it is] not apart from oath, (for those indeed apart from oath are become priests,

21 and he with an oath through Him who is saying unto him, `The Lord sware, and will not repent, Thou [art] a priest -- to the age, according to the order of Melchisedek;`)

22 by so much of a better covenant hath Jesus become surety,