King James Version
And when he hath taken away the multitude, his heart shall be lifted up; and he shall cast down many ten thousands: but he shall not be strengthened by it.English Standard Version
And when the multitude is taken away, his heart shall be exalted, and he shall cast down tens of thousands, but he shall not prevail.New International Version
When the army is carried off, the king of the South will be filled with pride and will slaughter many thousands, yet he will not remain triumphant.