Charles Ellicott Commentary Judges 15:12

"And they said unto him, We are come down to bind thee, that we may deliver thee into the hand of the Philistines. And Samson said unto them, Swear unto me, that ye will not fall upon me yourselves." — Judges 15:12 (ASV)

Swear unto me, that ye will not fall upon me yourselves. —It seems as if Samson were parleying with them from some point of vantage which he could easily have defended for a time.