Contradiction with Acts 23:12
This verse speaks of a group of Jews planning to kill Paul, while 1 Thessalonians 2:2 talks about boldly speaking the gospel despite suffering.
Acts 23:12: And when it was day, certain of the Jews banded together, and bound themselves under a curse, saying that they would neither eat nor drink till they had killed Paul. [under a curse: or, with an oath of execration]
Contradiction with Galatians 1:10
Paul emphasizes not seeking to please men but God, which contrasts with perceiving opposition as a hindrance in 1 Thessalonians 2:2.
Galatians 1:10: For do I now persuade men, or God? or do I seek to please men? for if I yet pleased men, I should not be the servant of Christ.
Contradiction with 2 Corinthians 11:24-25
Describes Paul suffering physical punishment, contradicting the assertion of bold-speaking despite opposition in 1 Thessalonians 2:2.
2 Corinthians 11:24-25: Of the Jews five times received I forty [stripes] save one.
Contradiction with 2 Timothy 3:12
Suggests all who live godly in Christ Jesus will suffer persecution, contrasting with the notion of preaching boldly.
2 Timothy 3:12: Yea, and all that will live godly in Christ Jesus shall suffer persecution.
Contradiction with Matthew 10:16-17
Advises being cautious, not just bold, which contradicts the idea of unwavering courage in adversity described in 1 Thessalonians 2:2.
Matthew 10:16-17: Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves. [harmless: or, simple]