Contradiction with Judges 1:19
In Judges 1:17, Judah is successful against the inhabitants of Zephath, but in Judges 1:19, they could not drive out the inhabitants of the valley because they had chariots of iron.
Judges 1:19: And the LORD was with Judah; and he drave out [the inhabitants of] the mountain; but could not drive out the inhabitants of the valley, because they had chariots of iron. [drave...: or, possessed the mountain]
Contradiction with Numbers 33:55
Judges 1:17 describes Judah's victory, but Numbers 33:55 warns that if the Israelites do not drive out all inhabitants, those remaining will be problematic, suggesting incomplete victories.
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 Joshua 1:5
Judges 1:17 shows a victory for Judah, but Joshua 1:5 promises that no one will be able to stand against Israelites, yet later verses show instances where they face resistance.
Joshua 1:5: There shall not any man be able to stand before thee all the days of thy life: as I was with Moses, [so] I will be with thee: I will not fail thee, nor forsake thee.
Contradiction with Deuteronomy 7:2
According to Judges 1:17, Judah defeated Zephath, but Deuteronomy 7:2 commands the Israelites to utterly destroy the peoples they conquer, implying complete annihilation which is not always depicted.
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 Joshua 15:63
Judges 1:17 describes a victory over Canaanites, but Joshua 15:63 states that Judah could not drive out the Jebusites from Jerusalem, showing an inconsistency in fully conquering the land.
Joshua 15:63: As for the Jebusites the inhabitants of Jerusalem, the children of Judah could not drive them out: but the Jebusites dwell with the children of Judah at Jerusalem unto this day.
Contradiction with Joshua 16:10
Contradicts with Judges 1:17 as it notes that the Ephraimites did not drive out the Canaanites in Gezer, showing incomplete conquest while Judah had success.
Joshua 16:10: And they drave not out the Canaanites that dwelt in Gezer: but the Canaanites dwell among the Ephraimites unto this day, and serve under tribute.
Contradiction with Judges 2:3
Following the success in Judges 1:17, Judges 2:3 indicates that God would not drive out the nations before them, suggesting a change in divine assistance or outcome.
Judges 2:3: Wherefore I also said, I will not drive them out from before you; but they shall be [as thorns] in your sides, and their gods shall be a snare unto you.