Contradiction with Acts 16:6-7
These verses describe how Paul was forbidden by the Holy Spirit to preach in certain areas, which contradicts the open door for effective work in 1 Corinthians 16:9.
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 2 Corinthians 2:12-13
These verses recount a situation where Paul had an open door to preach the gospel but had no rest in his spirit, thus leaving that opportunity, contrasting with the positive response in 1 Corinthians 16:9.
2 Corinthians 2:12-13: Furthermore, when I came to Troas to [preach] Christ's gospel, and a door was opened unto me of the Lord,
Contradiction with Matthew 13:57-58
This passage describes Jesus not being able to do "many mighty works" due to people’s unbelief, contrasting the effective work mentioned in 1 Corinthians 16:9.
Matthew 13:57-58: And they were offended in him. But Jesus said unto them, A prophet is not without honour, save in his own country, and in his own house.
Contradiction with Isaiah 55:11
This verse states that God's word accomplishes what He desires, which might contradict any notion of opposition hindering work as suggested in 1 Corinthians 16:9.
Isaiah 55:11: So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper [in the thing] whereto I sent it.
Contradiction with Mark 6:5-6
Jesus could do no mighty work in His hometown due to unbelief, presenting a contrast to the effective and open opportunity described in 1 Corinthians 16:9.
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].