Contradiction with Numbers 3:10
Assigns the duties of the priests, not gatekeeping.
Numbers 3:10: And thou shalt appoint Aaron and his sons, and they shall wait on their priest's office: and the stranger that cometh nigh shall be put to death.
Contradiction with Numbers 3:38
Stipulates that the Levites, not only the Korahites, guard the tabernacle.
Numbers 3:38: But those that encamp before the tabernacle toward the east, [even] before the tabernacle of the congregation eastward, [shall be] Moses, and Aaron and his sons, keeping the charge of the sanctuary for the charge of the children of Israel; and the stranger that cometh nigh shall be put to death.
Contradiction with 1 Chronicles 23:32
States the broader Levitical responsibilities that include roles beyond gatekeeping.
1 Chronicles 23:32: And that they should keep the charge of the tabernacle of the congregation, and the charge of the holy [place], and the charge of the sons of Aaron their brethren, in the service of the house of the LORD.
Contradiction with 1 Chronicles 6:33-37
Lists Heman as a descendant of Kohath, with no mention of his role as a gatekeeper.
1 Chronicles 6:33-37: And these [are] they that waited with their children. Of the sons of the Kohathites: Heman a singer, the son of Joel, the son of Shemuel, [waited: Heb. stood]
Contradiction with 1 Chronicles 26:1-19
Describes the divisions of gatekeepers among the descendants of Kore, not limited to Korahites.
1 Chronicles 26:1-19: Concerning the divisions of the porters: Of the Korhites [was] Meshelemiah the son of Kore, of the sons of Asaph. [Meshelemiah: also called, Shelemiah] [Asaph: also called, Ebiasaph]