Contradiction with Acts 1:9
This verse describes Jesus being taken up into heaven and no further appearances on earth are noted, potentially conflicting with Paul's claim of having seen Jesus.
Acts 1:9: And when he had spoken these things, while they beheld, he was taken up; and a cloud received him out of their sight.
Contradiction with Acts 9:3-5
Describes a vision of Jesus, not a physical presence, which some might argue is different from the post-resurrection appearances to the apostles.
Acts 9:3-5: And as he journeyed, he came near Damascus: and suddenly there shined round about him a light from heaven:
Contradiction with 1 Corinthians 1:1
Mentions Paul as an apostle called by Jesus Christ, which some could see as conflicting with 1 Corinthians 15:8's context where Paul places himself as the "last" to have seen Christ.
1 Corinthians 1:1: Paul, called [to be] an apostle of Jesus Christ through the will of God, and Sosthenes [our] brother,
Contradiction with Hebrews 1:1-2
States that God has now spoken through His Son, implying the finality of revelation through Jesus, possibly raising questions about post-resurrection appearances directly to individuals like Paul.
Hebrews 1:1-2: God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets,
Contradiction with 1 Corinthians 9:1
This is Paul asserting his apostleship by claiming he has seen Jesus Christ, which some may interpret as inconsistent with the implied rarity or finality of such appearances in 1 Corinthians 15:8.
1 Corinthians 9:1: Am I not an apostle? am I not free? have I not seen Jesus Christ our Lord? are not ye my work in the Lord?