Matthew Poole and continuators on Ezekiel 44:20

20 Neither shall they shave their heads, nor suffer their locks to grow long they shall onely poll their heads.

It was forbidden, Lev. 19.27. & 21.5. Hair is given for an Ornament, and the Priests should not disfigure themselves nor imitate Idolatrous Heathens.

Priding themselves in it, as Absolom, giving ill Example by such excess.

When the hair is grown somewhat, they shall trim, cut the ends of their hair, and keep it in moderate size; Beside long hair was token of a Nazarites Vow, and God would have all Holy Things and Persons kept unmixt and distinguish'd from other common things.