Can you help me find the passage of Scripture that refers to what GOD will do to nations that divide Israel?
I believe you’re referring to Joel 3:1-2. Speaking of the end times, the Lord had Joel say,
“In those days and at that time, when I restore the fortunes of Judah and Jerusalem, I will gather all nations and bring them down to the Valley of Jehoshaphat. There I will put them on trial for what they did to my inheritance, my people Israel, because they scattered my people among the nations and divided up my land.”
Since Jeremiah 30:11 tells all the nations among which the Israelites have been scattered will be completely destroyed during the Great Tribulation, Joel’s prophecy will likely be fulfilled at that time and destruction will be the penalty for scattering His people and dividing His land.