Contradiction with 1 Chronicles 6:48
1 Chronicles 6:50 lists specific lineages, whereas 6:48 groups them with broader duties.
1 Chronicles 6:48: Their brethren also the Levites [were] appointed unto all manner of service of the tabernacle of the house of God.
Contradiction with 1 Samuel 8:3
Contradicts the idea of a divinely appointed, faultless priesthood by showing they can be corrupt.
1 Samuel 8:3: And his sons walked not in his ways, but turned aside after lucre, and took bribes, and perverted judgment.