This would have been a good moment for Samson to muster the Judahites and attack the Philistines. But instead he takes the city gates to Hebron. This is no rallying call (like Ehud’s trumpet blast in Judges 3:27). He is quite content with a feat of strength that had no purpose other than goofing with the enemy and boosting his own ego.1 He is not at all taking his calling seriously. He will fight the Philistines alone, in his own way.2
3 But Samson lay till midnight, and at midnight he arose and took hold of the doors of the gate of the city and the two posts, and pulled them up, bar and all, and put them on his shoulders and carried them to the top of the hill that is in front of Hebron.