Psalm 110:4 in the World English Bible
The LORD has sworn, and will not change his mind: “You are a priest forever in the order of Melchizedek.”
Context
3 Thy people shall be willing in the day of thy power, in the beauties of holiness from the womb of the morning: thou hast the dew of thy youth.
4 The LORD hath sworn, and will not repent, Thou art a priest for ever after the order of Melchizedek.
5 The Lord at thy right hand shall strike through kings in the day of his wrath.