Albert Barnes Commentary Judges 13:5

"for, lo, thou shalt conceive, and bear a son; and no razor shall come upon his head; for the child shall be a Nazirite unto God from the womb: and he shall begin to save Israel out of the hand of the Philistines." — Judges 13:5 (ASV)

A Nazarite - See the marginal reference and note. The common Nazarite vow was for a limited time, like Paul’s (Acts 18:18; Acts 21:23–26). Others, like Samuel (1 Samuel 1:11), were Nazarites for life.