Contradiction with 1 Chronicles 23:30
It describes the Levites as also standing every morning and evening to thank and praise the Lord, not just those settled in Jerusalem.
1 Chronicles 23:30: And to stand every morning to thank and praise the LORD, and likewise at even;
Contradiction with Numbers 8:24-26
It specifies that Levites serve from age 25 to 50, suggesting some duties could change with age, contrary to the understanding of perpetual duties in 1 Chronicles 9:34.
Numbers 8:24-26: This [is it] that [belongeth] unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation: [to...: Heb. to war the warfare of, etc]
Contradiction with Nehemiah 7:1-6
Discusses the roles and reorganization of those who served after the exile, implying possible changes to the perpetual lineages noted in 1 Chronicles 9:34.
Nehemiah 7:1-6: Now it came to pass, when the wall was built, and I had set up the doors, and the porters and the singers and the Levites were appointed,
Contradiction with Hebrews 7:23-24
Indicates that the priesthood changed after Jesus, which contrasts with the idea of an unchanging line of priesthoods mentioned in 1 Chronicles 9:34.
Hebrews 7:23-24: And they truly were many priests, because they were not suffered to continue by reason of death: