NET

9 They hid in the bedroom and then she said to him, “The Philistines are here, Samson!” He snapped the bowstrings as easily as a thread of yarn snaps when it is put close to fire. The secret of his strength was not discovered.

Darby

9 Now she had liers in wait abiding in the chamber; and she said to him, The Philistines are upon thee, Samson! And he broke the cords, as a thread of tow is broken when it touches the fire; and his strength was not known.

KJV

9 Now [there were] men lying in wait, abiding with her in the chamber. And she said unto him, The Philistines [be] upon thee, Samson. And he brake the withs, as a thread of tow is broken when it toucheth the fire. So his strength was not known.