KJV
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.
BSB
For the entire period of his vow of separation, no razor shall pass over his head. He must be holy until the time of his separation to the LORD is complete; he must let the hair of his head grow long.