TSK · Judges 13:5

Speak unto the children of Israel, and say unto them, When either man or woman shall make a special vow, the vow of a Nazirite, to separate himself unto Jehovah,

And he told her all his heart, and said unto her, There hath not come a razor upon my head; for I have been a Nazirite unto God from my mother's womb: if I be shaven, then my strength will go from me, and I shall become weak, and be like any other man.

So the Philistines were subdued, and they came no more within the border of Israel: and the hand of Jehovah was against the Philistines all the days of Samuel.

And after this it came to pass, that David smote the Philistines, and subdued them, and took Gath and its towns out of the hand of the Philistines.