Contradiction with Leviticus 13:46
This verse states that a leper should dwell alone outside the camp, contradicting the presence of Uzziah in the house of the LORD before becoming a leper.
Leviticus 13:46: All the days wherein the plague [shall be] in him he shall be defiled; he [is] unclean: he shall dwell alone; without the camp [shall] his habitation [be].
Contradiction with Numbers 12:10
When Miriam became leprous, she was immediately put out of the camp, showing immediate exclusion unlike Uzziah being confronted before leaving.
Numbers 12:10: And the cloud departed from off the tabernacle; and, behold, Miriam [became] leprous, [white] as snow: and Aaron looked upon Miriam, and, behold, [she was] leprous.
Contradiction with Numbers 5:2
This verse commands the removal of lepers from the camp, while in 2 Chronicles 26:20, Uzziah is inside the house of the LORD when confronted with leprosy.
Numbers 5:2: Command the children of Israel, that they put out of the camp every leper, and every one that hath an issue, and whosoever is defiled by the dead:
Contradiction with Luke 5:12-14
Jesus instructs a leper to show himself to a priest only after being cleansed, whereas Uzziah remains a leper after being struck by it.
Luke 5:12-14: And it came to pass, when he was in a certain city, behold a man full of leprosy: who seeing Jesus fell on [his] face, and besought him, saying, Lord, if thou wilt, thou canst make me clean.
Contradiction with Mark 1:40-42
Here, Jesus heals the leper immediately upon request, whereas Uzziah's leprosy results in his isolation and remains with him until death.
Mark 1:40-42: And there came a leper to him, beseeching him, and kneeling down to him, and saying unto him, If thou wilt, thou canst make me clean.