Contradiction with John 3:30
The verse speaks of decreasing oneself to exalt another, contrary to Joshua 4:14 where Joshua is exalted in the sight of Israel.
John 3:30: He must increase, but I [must] decrease.
Contradiction with James 4:10
Promotes humility and being exalted by God, differing from the immediate exaltation of Joshua by the people.
James 4:10: Humble yourselves in the sight of the Lord, and he shall lift you up.
Contradiction with Matthew 23:12
Says those who exalt themselves will be humbled, conflicting with Joshua's exaltation in the eyes of Israel.
Matthew 23:12: And whosoever shall exalt himself shall be abased; and he that shall humble himself shall be exalted.
Contradiction with 1 Samuel 16:7
Stresses that God looks at the heart, whereas in Joshua 4:14, Joshua is exalted based on external actions.
1 Samuel 16:7: But the LORD said unto Samuel, Look not on his countenance, or on the height of his stature; because I have refused him: for [the LORD seeth] not as man seeth; for man looketh on the outward appearance, but the LORD looketh on the heart. [outward...: Heb. eyes]
Contradiction with Luke 14:11
Suggests that God humbles the exalted, unlike Joshua's direct exaltation before Israel.
Luke 14:11: For whosoever exalteth himself shall be abased; and he that humbleth himself shall be exalted.