Contradiction with 1 Corinthians 14:33
Galatians 2:2 describes Paul's journey to clarify the gospel, which implies the complexity and discord in understanding, whereas 1 Corinthians 14:33 states that God is not the author of confusion, suggesting there should be clarity and harmony.
1 Corinthians 14:33: For God is not [the author] of confusion, but of peace, as in all churches of the saints. [confusion: Gr. tumult, or, unquietness]
Contradiction with Acts 15:2
Galatians 2:2 discusses a private meeting with leaders to avoid disputes, while Acts 15:2 depicts Paul and Barnabas engaging publicly in heated debate and disagreement, showing a more confrontational approach.
Acts 15:2: When therefore Paul and Barnabas had no small dissension and disputation with them, they determined that Paul and Barnabas, and certain other of them, should go up to Jerusalem unto the apostles and elders about this question.
Contradiction with 2 Corinthians 8:18-19
Galatians 2:2 speaks of a private consultation, but 2 Corinthians 8:18-19 discusses the appointment of a brother who is well-known and praised by all, hinting at a more communal and open approach to missions and discussions.
2 Corinthians 8:18-19: And we have sent with him the brother, whose praise [is] in the gospel throughout all the churches;
Contradiction with Matthew 5:15
Galatians 2:2 describes going privately to leaders, whereas Matthew 5:15 encourages sharing light openly and not hiding it, suggesting that discussions on gospel truth should be public.
Matthew 5:15: Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house. [a bushel: the word in the original signifieth a measure containing about a pint less than a peck]