Contradiction with John 20:10-18
This passage recounts Mary Magdalene as the first to see the risen Christ, contradicting 1 Corinthians 15:7 which implies James saw Christ after the 12.
John 20:10-18: Then the disciples went away again unto their own home.
Contradiction with Matthew 28:8-10
In this passage, Jesus first appears to Mary Magdalene and the other Mary, contradicting the sequence of appearances suggested in 1 Corinthians 15:7.
Matthew 28:8-10: And they departed quickly from the sepulchre with fear and great joy; and did run to bring his disciples word.
Contradiction with Mark 16:9
States that Jesus appeared first to Mary Magdalene, conflicting with 1 Corinthians 15:7 which suggests an appearance to James as a significant standalone event.
Mark 16:9: Now when [Jesus] was risen early the first [day] of the week, he appeared first to Mary Magdalene, out of whom he had cast seven devils.
Contradiction with Luke 24:34
Mentions that Jesus appeared to Simon before the others, differing from the sequence implied in 1 Corinthians 15:7.
Luke 24:34: Saying, The Lord is risen indeed, and hath appeared to Simon.