Ezekiel 44:20
Nor shall they shave their heads nor allow their hair to grow long; they shall only trim their heads.
Numbers 6:5
All the days of his vow to separate, no razor shall come upon his head. Until all the days are fulfilled in which he separates to Jehovah, he shall be holy. He shall let the locks of the hair of his head grow.
Leviticus 21:5-24
They shall not make baldness on their head, nor shall they shave the corner of their beard, nor make any cutting in their flesh.
Deuteronomy 14:1
You are the sons of Jehovah your God. You shall not cut yourselves nor make any baldness between your eyes for the dead.
1 Corinthians 11:14
Does not even nature itself teach you that if man has long hair, it is a shame to him?