“But Ehud made him a dagger (which had two edges) of a cubite length, and he did gird it vnder his raiment, vpon his right thigh,”
1611 King James Version (KJV)
3:16 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.