Samson was crazy strong in body, but not morally. True strength comes from seeking God (Isaiah 40:31). On our own we can’t be strong, but in the Lord we can!. Compare Samson’s ever-increasing moral compromises, humiliation, and death (Judges 13-16) to Christ’s example of Ephesian 6:10 (the secret of true spiritual strength): “Be strong in the Lord and in the power of his might.”
