The Lord sends forth from Zion
    your mighty scepter.
    Rule in the midst of your enemies!
Your people will offer themselves freely
    on the day of your power,
    in holy garments;
from the womb of the morning,
    the dew of your youth will be yours.
The Lord has sworn
    and will not change his mind,
“You are a priest forever
    after the order of Melchizedek.”

—Psalm 110:1–4

For it is witnessed of him,

For on the one hand, a former commandment is set aside because of its weakness and uselessness (for the law made nothing perfect); but on the other hand, a better hope is introduced, through which we draw near to God.

And it was not without an oath. For those who formerly became priests were made such without an oath, but this one was made a priest with an oath by the one who said to him:

This makes Jesus the guarantor of a better covenant.

The former priests were many in number, because they were prevented by death from continuing in office, but he holds his priesthood permanently, because he continues forever. Consequently, he is able to save to the uttermost those who draw near to God through him, since he always lives to make intercession for them.

—Hebrews 7:17–25