# This one became a priest

The words "This one" refer to the one who became priest in the likeness of Melchizedek.

# not based on a law of physical requirement

He became priest, but it was not because he met the physical requrement.

# a law of physical requirement

This physical requirement is that only the descendants of priests could become priests. Alternate translation: "a law of human descent" or "a law that required priests to be descendants of priests" (See: [[rc://en/ta/man/jit/figs-explicit]])