Delilah tells the Philistines how to defeat Samson
Delilah called the Philistines and told them how to defeat Samson.
Key passages
Jdg 16:18

Delilah realized that he had confided in her, so she sent and called the rulers of the Philistines, saying, “Come up one more time, for he has confided in me.” And the rulers of the Philistines came up, and they brought the money with them.