וַיֹּסִ֙פוּ֙ בְּנֵ֣י יִשְׂרָאֵ֔ל לַעֲשׂ֥וֹת הָרַ֖ע בְּעֵינֵ֣י יְהוָ֑ה וַיִּתְּנֵ֧ם יְהוָ֛ה בְּיַד־פְּלִשְׁתִּ֖ים אַרְבָּעִ֥ים שָׁנָֽה׃ (פ)
And the children of Israel again did that which was evil in the sight of the LORD; and the LORD delivered them into the hand of the Philistines forty years.
Read halakhic rulings (Jewish law) on Judges 13:1: and classical halakhic sources.