Contradiction with Matthew 13:58
It says Jesus did not do many miracles there because of their unbelief, contrasting with the spreading faith and increasing disciples in Acts 6:7.
Matthew 13:58: And he did not many mighty works there because of their unbelief.
Contradiction with Mark 6:5-6
Jesus could do no mighty work and marveled at their unbelief, which contradicts the growth and multiplication of believers in Acts 6:7.
Mark 6:5-6: And he could there do no mighty work, save that he laid his hands upon a few sick folk, and healed [them].
Contradiction with John 12:37
Even after performing many signs, they did not believe in Him, opposing the idea of the priests' obedience to faith in Acts 6:7.
John 12:37: But though he had done so many miracles before them, yet they believed not on him:
Contradiction with Hebrews 3:19
They could not enter because of unbelief, which contrasts with the multiplying disciples and growing faith in Acts 6:7.
Hebrews 3:19: So we see that they could not enter in because of unbelief.
Contradiction with Romans 10:16
They have not all obeyed the gospel, which differs from the great company of priests being obedient in Acts 6:7.
Romans 10:16: But they have not all obeyed the gospel. For Esaias saith, Lord, who hath believed our report? [our report: Gr. the hearing of us?] [report: or, preaching?]
Contradiction with 2 Thessalonians 2:10-11
They did not believe the truth and took pleasure in unrighteousness, which contradicts the increasing obedience and faith in Acts 6:7.
2 Thessalonians 2:10-11: And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved.