Delilah said to Samson, Behold, you have mocked me, and told me lies: now tell me, Please, with which you might be bound.
The seven fresh cords (Judges 16:7) were probably common catgut cords that the Philistines used for bowstrings and the strings of their harps. If so, they were unclean for Samson since they were dead animal parts. Perhaps Samson specified seven of these since the Israelites regarded seven as a complete number. New ropes (Judges 16:11) had not held him previously (cf. Judges 15:13-14), but perhaps the lords of the Philistines were unaware of this.