It is he who shall build the temple of the Lord; he shall bear royal honor and shall sit upon his throne and rule. There shall be a priest by his throne, with peaceful understanding between the two of them.
God is not a human being, that he should lie, or a mortal, that he should change his mind. Has he promised, and will he not do it? Has he spoken, and will he not fulfill it?
Now if perfection had been attainable through the Levitical priesthood—for the people received the law under this priesthood—what further need would there have been to speak of another priest arising according to the order of Melchizedek rather than one according to the order of Aaron?
but this one became a priest with an oath because of the one who said to him, “The Lord has sworn and will not change his mind, ‘You are a priest forever’ ”
For the law appoints as high priests humans, who are subject to weakness, but the word of the oath, which came later than the law, appoints a Son who has been made perfect forever.