Contradiction with Numbers 32:33
It suggests that the land of Gilead was given to the tribes of Gad and Reuben, not just Reuben as implied in Deuteronomy 3:12.
Numbers 32:33: And Moses gave unto them, [even] to the children of Gad, and to the children of Reuben, and unto half the tribe of Manasseh the son of Joseph, the kingdom of Sihon king of the Amorites, and the kingdom of Og king of Bashan, the land, with the cities thereof in the coasts, [even] the cities of the country round about.
Contradiction with Joshua 13:8
This verse notes that half the tribe of Manasseh also received part of Gilead, contradicting the allotment mentioned in Deuteronomy 3:12.
Joshua 13:8: With whom the Reubenites and the Gadites have received their inheritance, which Moses gave them, beyond Jordan eastward, [even] as Moses the servant of the LORD gave them;
Contradiction with Judges 10:4
Indicates that Jair, a Gileadite, controlled thirty cities in the region, which implies a different tribal ownership than suggested in Deuteronomy 3:12.
Judges 10:4: And he had thirty sons that rode on thirty ass colts, and they had thirty cities, which are called Havothjair unto this day, which [are] in the land of Gilead. [Havothjair: or, the villages of Jair]
Contradiction with 1 Chronicles 5:16
States that the children of Gad dwelt in Gilead, suggesting a different tribal possession than the one indicated in Deuteronomy 3:12.
1 Chronicles 5:16: And they dwelt in Gilead in Bashan, and in her towns, and in all the suburbs of Sharon, upon their borders. [their...: Heb. their goings forth]