'Fulfilling' in the Bible

" 'All the days of the vow of his separation a razor will not pass over his head. Until fulfilling the days that he separated himself to Yahweh he will be holy and grow long the locks of the hair of his head.

" 'This [is] the regulation of the Nazirite for the day of the fulfilling of the days of his separation: one will bring him to the doorway of the tent of the assembly.