Contradiction with Numbers 1:21
Numbers 1:21 records a different count for the descendants of Reuben than that of Numbers 26:12.
Numbers 1:21: Those that were numbered of them, [even] of the tribe of Reuben, [were] forty and six thousand and five hundred.
Contradiction with Genesis 46:9
Genesis 46:9 lists different names for the sons of Reuben, creating a potential contradiction with the descendants listed in Numbers 26:12.
Genesis 46:9: And the sons of Reuben; Hanoch, and Phallu, and Hezron, and Carmi.
Contradiction with Numbers 2:11
Numbers 2:11 presents a different logistical setup for the Reuben camp contradicting the number and arrangement described later in Numbers 26:12.
Numbers 2:11: And his host, and those that were numbered thereof, [were] forty and six thousand and five hundred.
Contradiction with Exodus 6:14
Exodus 6:14 provides a genealogical account that might not align with the generational count and names in Numbers 26:12.
Exodus 6:14: These [be] the heads of their fathers' houses: The sons of Reuben the firstborn of Israel; Hanoch, and Pallu, Hezron, and Carmi: these [be] the families of Reuben.