Judges 16:5

Princes, ( seranim;) the five satraps, who had the chief sway in the nation, either came in person or sent messengers to Cephar-Sorec. They were convinced that the strength of Samson was supernatural; but they wished to learn whether it depended on some magical charm, or on some religious observation, or whether he was vulnerable only in some particular part, like Achilles, who could only be slain by a wound in the heel, according to the pagans. (Calmet) --- If Dalila would learn, and endeavour to remove the obstacle, these princes engaged to give her each 1100 pieces (or sicles, Calmet) of silver. (Salien)