-- King James
Numbers 6:5 All the days of the vow of his separation there shall no rasor come upon his head: until the days be fulfilled, in the which he separateth himself unto the Lord, he shall be holy, and shall let the locks of the hair of his head grow.
-- New International Version
Numbers 6:5 "`During the entire period of his vow of separation no razor may be used on his head. He must be holy until the period of his separation to the LORD is over; he must let the hair of his head grow long.