Joel 3:8

⁸ And I will sell your sons and your daughters into the hand of the children of Judah, and they shall sell them to the Sabeans, to a nation far off: for Jehovah hath spoken.

Valley of Shittim

'The valley of Shittim,' as in Joel 3:18, the fountain of the Lord watering the valley means that the understanding will be englightened by truths.