Contradiction with Numbers 21:24
Numbers 21:24 states that Israel defeated Sihon and took possession of his land by battle, implying a human military victory rather than God's direct intervention, which contrasts with Joshua 24:8 that credits God with driving the inhabitants out.
Numbers 21:24: And Israel smote him with the edge of the sword, and possessed his land from Arnon unto Jabbok, even unto the children of Ammon: for the border of the children of Ammon [was] strong.
Contradiction with Judges 2:21-22
Judges 2:21-22 mentions God not driving out all the nations to test Israel, contradicting Joshua 24:8 where God is said to have driven out specific nations before the Israelites.
Judges 2:21-22: I also will not henceforth drive out any from before them of the nations which Joshua left when he died:
Contradiction with Deuteronomy 7:2
Deuteronomy 7:2 instructs the Israelites to utterly destroy the nations and make no covenants with them, emphasizing human action, unlike Joshua 24:8 which highlights God's role in delivering the nations.
Deuteronomy 7:2: And when the LORD thy God shall deliver them before thee; thou shalt smite them, [and] utterly destroy them; thou shalt make no covenant with them, nor shew mercy unto them: