Contradiction with 2 Kings 24:14
While Jeremiah 40:12 discusses the return of people to the land of Judah, 2 Kings 24:14 describes the exile of people from Judah, showing a contrasting movement.
2 Kings 24:14: And he carried away all Jerusalem, and all the princes, and all the mighty men of valour, [even] ten thousand captives, and all the craftsmen and smiths: none remained, save the poorest sort of the people of the land.
Contradiction with Deuteronomy 28:64
This verse speaks of the scattering of the people as a punishment, in contrast to Jeremiah 40:12, which discusses their regathering.
Deuteronomy 28:64: And the LORD shall scatter thee among all people, from the one end of the earth even unto the other; and there thou shalt serve other gods, which neither thou nor thy fathers have known, [even] wood and stone.
Contradiction with Jeremiah 52:27
Refers to the killing of people instead of a gathering, contrasting with the peaceful return mentioned in Jeremiah 40:12.
Jeremiah 52:27: And the king of Babylon smote them, and put them to death in Riblah in the land of Hamath. Thus Judah was carried away captive out of his own land.
Contradiction with Ezekiel 5:10
Describes extreme punishment and scattering, which is opposite to the assembly and return of people in Jeremiah 40:12.
Ezekiel 5:10: Therefore the fathers shall eat the sons in the midst of thee, and the sons shall eat their fathers; and I will execute judgments in thee, and the whole remnant of thee will I scatter into all the winds.
Contradiction with Lamentations 1:3
Talks about the afflictions and exiles of Judah, contradicting the return and gathering aspect in Jeremiah 40:12.
Lamentations 1:3: Judah is gone into captivity because of affliction, and because of great servitude: she dwelleth among the heathen, she findeth no rest: all her persecutors overtook her between the straits. [because of great...: Heb. for the greatness of servitude]