Ehud, made him a dagger It is probable that none of the Israelites were suffered to wear arms, and therefore this particular is mentioned of Ehud; and that he wore it under his upper garment to conceal it: for it does not appear that he made it purposely for the occasion, in which we are told in the following verses, he employed it. A cubit length Long enough for his design, and not too long for concealment. His right thigh Which was most convenient both for the use of his left hand, and for avoiding suspicion.
Related Commentaries of Judges 3:16
Judges 3:16
16 But Ehud made him a dagger which had two edges, of a cubit length; and he did gird it under his raiment upon his right thigh.