An attacker advances against you, Nineveh. Guard the fortress, watch the road, brace yourselves, marshal all your strength! (NIV)
HE WHO dashes in pieces [that is, the king of Medo-Babylon] is come up before your face [Nineveh]. Keep the fortress and ramparts manned, watch the road, gird your loins, collect and fortify all your strength and power mightily. (AMP)
He that dasheth in pieces is come up before thy face: keep the munition, watch the way, make thy loins strong, fortify thy power mightily. (KJV)