7 Samson replied, "If I were tied up with seven new bowstrings that have not yet been dried, I would become as weak as anyone else." 8 So the Philistine rulers brought Delilah seven new bowstrings, and she tied Samson up with them. 9 She had hidden some men in one of the inner rooms of her house, and she cried out, "Samson! The Philistines have come to capture you!" But Samson snapped the bowstrings as a piece of string snaps when it is burned by a fire. So the secret of his strength was not discovered.
Matthew Henry's Commentary on Judges 16:7-9
Commentary on Judges 16:4-17
(Read Judges 16:4-17)
Samson had been more than once brought into mischief and danger by the love of women, yet he would not take warning, but is again taken in the same snare, and this third time is fatal. Licentiousness is one of the things that take away the heart. This is a deep pit into which many have fallen; but from which few have escaped, and those by a miracle of mercy, with the loss of reputation and usefulness, of almost all, except their souls. The anguish of the suffering is ten thousand times greater than all the pleasures of the sin.