JDG 16:9

9 Then she hid the men in one of the rooms in her house. Then [while Samson was sleeping], she tied him up with the bowstrings. Then she called out, “Samson! The Philistines have come here to capture you!” But Samson snapped the bowstrings as easily as though they were strings that had been singed in a fire. So the Philistines did not find out what made Samson so strong.