Contradiction with Psalm 19:4
Romans 10:18 uses this verse to suggest that the message has gone out to everyone, but Psalms originally refers to the heavens, not a spoken message to all nations.
Psalm 19:4: Their line is gone out through all the earth, and their words to the end of the world. In them hath he set a tabernacle for the sun, [line: or, rule, or, direction]
Contradiction with Matthew 24:14
This verse suggests that the Gospel will be preached to all nations as a future event, implying it hadn’t happened yet during Paul's time.
Matthew 24:14: And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.
Contradiction with Colossians 1:23
Seems to agree with Romans 10:18 but is often debated because others interpret it as not literally meaning "all creation" has heard the Gospel yet.
Colossians 1:23: If ye continue in the faith grounded and settled, and [be] not moved away from the hope of the gospel, which ye have heard, [and] which was preached to every creature which is under heaven; whereof I Paul am made a minister;
Contradiction with 1 Corinthians 1:21
Indicates that the world, by wisdom, did not know God, suggesting not everyone has heard about God.
1 Corinthians 1:21: For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.
Contradiction with Acts 16:6
This verse indicates regions where preaching was restricted, implying not everyone had heard the word by then.
Acts 16:6: 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,