And inasmuch as He was not made priest without an oath
Hebrews 7:20
Surrounding context
7:19 for the law made nothing perfect; on the other hand, there is the bringing in of a better hope, through which we draw near to God.
7:20 And inasmuch as He was not made priest without an oath
7:21 (for they have become priests without an oath, but He with an oath by Him who said to Him: "The LORD has sworn And will not relent, "You are a priest forever According to the order of Melchizedek"'),