Contradiction with Numbers 33:55
While Numbers 34:12 describes the boundary of the land, Numbers 33:55 warns of the consequences if the inhabitants of the land are not driven out, suggesting incomplete occupation.
Numbers 33:55: But if ye will not drive out the inhabitants of the land from before you; then it shall come to pass, that those which ye let remain of them [shall be] pricks in your eyes, and thorns in your sides, and shall vex you in the land wherein ye dwell.
Contradiction with Ezekiel 47:18
This verse gives a different description of the eastern boundary for the land than Numbers 34:12, indicating a discrepancy in territorial delineation.
Ezekiel 47:18: And the east side ye shall measure from Hauran, and from Damascus, and from Gilead, and from the land of Israel [by] Jordan, from the border unto the east sea. And [this is] the east side. [from (Hauran, Damascus, Gilead, the land): Heb. from between]
Contradiction with Joshua 1:4
The boundaries described here include territories beyond what is mentioned in Numbers 34:12, suggesting inconsistency in the described land extent.
Joshua 1:4: From the wilderness and this Lebanon even unto the great river, the river Euphrates, all the land of the Hittites, and unto the great sea toward the going down of the sun, shall be your coast.