Most undertook such vows for only a set period of time, but a few, such as Samson, Samuel, and John the Baptist, were lifelong Nazirites.
Parasti šādu solījumu deva uz noteiktu laiku, bet daži, piemēram, Simsons, Samuēls un Jānis Kristītājs, bija nazīrieši mūža garumā.