Contradiction with Mark 16:15
This verse instructs to preach the gospel to every creature, which could imply a universal approach rather than focusing primarily on Gentiles as outlined in Romans 15:16.
Mark 16:15: And he said unto them, Go ye into all the world, and preach the gospel to every creature.
Contradiction with Matthew 10:5-6
Jesus instructs the disciples to avoid Gentiles and focus on the lost sheep of Israel, which contrasts with Paul's mission to the Gentiles in Romans 15:16.
Matthew 10:5-6: These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into [any] city of the Samaritans enter ye not:
Contradiction with Acts 16:6-7
The Holy Spirit prevents preaching in certain regions, suggesting a selective approach contrary to the open mission to Gentiles in Romans 15:16.
Acts 16:6-7: Now when they had gone throughout Phrygia and the region of Galatia, and were forbidden of the Holy Ghost to preach the word in Asia,
Contradiction with Galatians 2:9
Paul agrees to go to the Gentiles while others go to the Jews, contrasting the collective mission suggested in Romans 15:16.
Galatians 2:9: And when James, Cephas, and John, who seemed to be pillars, perceived the grace that was given unto me, they gave to me and Barnabas the right hands of fellowship; that we [should go] unto the heathen, and they unto the circumcision.