For every high priest chosen from among men is appointed to act on behalf of men in relation to God, to offer gifts and sacrifices for sins.
He can deal gently with the ignorant and wayward, since he himself is beset with weakness.
Because of this he is bound to offer sacrifice for his own sins as well as for those of the people.
And one does not take the honor upon himself, but he is called by God, just as Aaron was.
So also Christ did not exalt himself to be made a high priest, but was appointed by him who said to him, "Thou art my Son, today I have begotten thee";
as he says also in another place, "Thou art a priest for ever, after the order of Melchiz'edek."
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (Revised Standard Version - Holy Bible)