Contradiction with Deuteronomy 7:2
This verse commands the Israelites to completely destroy certain nations and make no covenant with them, contrasting with the idea of providing refuge.
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:
Contradiction with Exodus 21:12
This verse states that anyone who strikes a man and kills him shall surely be put to death, which contrasts with the provision of cities of refuge for accidental killings.
Exodus 21:12: He that smiteth a man, so that he die, shall be surely put to death.
Contradiction with Numbers 35:16-17
These verses state that if someone kills another with an iron weapon or stone, they are a murderer and should be put to death, contrasting with the cities of refuge for accidental killers.
Numbers 35:16-17: And if he smite him with an instrument of iron, so that he die, he [is] a murderer: the murderer shall surely be put to death.