I received the following question:

What significance is there of Ehud being a left-handed man? It doesn’t seem to be a weak think as Bullinger notes.

That doesn’t seem to make much sense as an explanation. Verse 15 does make a big deal of the fact that he was left-handed.

15. But when the children of Israel cried out to the LORD, the LORD raised up a deliverer for them: Ehud the son of Gera, the Benjamite, a left-handed man. By him the children of Israel sent tribute to Eglon king of Moab.

I believe that it mentions this so particularly because of the way he assassinated Eglon king of Moab, Israel’s oppressor. Judges 3:21 describes it.

21. Then Ehud reached with his left hand, took the dagger from his right thigh, and thrust it into his belly.

Because most people back then were right handed (and still are,) the way Ehud assassinated this king was unusual, because most right-handed people would not have been able to use a dagger with that much skill with their left hands. Part of the reason Ehud fooled Eglon so completely apparently was that he had this dagger in his left hand. He probably had his right hand where Eglon could see it, and so the move with his left hand took him by surprise. In this way, his left-handedness was helpful to him in carrying out this mission. I believe that is why it mentions his left-handedness.