Ehud came to him; and he was sitting by himself alone in the cool upper room. Ehud said, I have a message from God to you. He arose out of his seat.
The writer may have recorded this last disgusting detail to draw a parallel with the unclean Moabites’ departure from the land following Ehud’s victory. Notice the cool way Ehud behaved after he slew the king in his cool room (Judges 3:23). Perhaps it was the odor of Eglon’s excrement as well as the locked doors that led the servants to conclude that the king was relieving himself (Judges 3:24).