Bible Dictionary · V
Vows
Voluntary promises which, when once made, were to be kept if the thing vowed was right. They were made under a great variety of circumstances (Gen 28:1–22: 18-22; Lev 7:16; Num 30:2–13; Deut 23:18; Judg 11:30, Judg 11:39; 1 Sam 1:11; Jonah 1:16; Acts 18:18; Acts 21:23).
From Easton’s Bible Dictionary (1897), by Matthew George Easton.