Judges 13:1, 5

And the children of Israel did evil again in the sight of the LORD; and the LORD delivered them into the hand of the Philistines forty years.

for, lo, thou shalt conceive, and bear a son; and no razor shall come on his head: for the child shall be a Nazarite unto God from the womb: and he shall begin to deliver Israel out of the hand of the Philistines.