Contradiction with 1 Corinthians 14:33
God is not the author of confusion, yet speaking in tongues without interpretation can confuse listeners.
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 1 Corinthians 14:27-28
Tongues should only be spoken if there is an interpreter, yet Acts 2:4 depicts them speaking without mention of interpretation initially.
1 Corinthians 14:27-28: If any man speak in an [unknown] tongue, [let it be] by two, or at the most [by] three, and [that] by course; and let one interpret. [two...: by two or three sentences separately]
Contradiction with 1 Corinthians 14:22
Tongues are a sign for unbelievers, but Acts 2:4 depicts believers speaking in tongues within their own group.
1 Corinthians 14:22: Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying [serveth] not for them that believe not, but for them which believe.
Contradiction with 1 Corinthians 12:30
Not everyone speaks in tongues, yet Acts 2:4 suggests all present were filled and spoke.
1 Corinthians 12:30: Have all the gifts of healing? do all speak with tongues? do all interpret?
Contradiction with 1 Corinthians 14:19
Prefer to speak five words with understanding than ten thousand in an unknown tongue, which may contradict the emphasis on speaking in tongues in Acts 2:4.
1 Corinthians 14:19: Yet in the church I had rather speak five words with my understanding, that [by my voice] I might teach others also, than ten thousand words in an [unknown] tongue.
Paradox #1
Some people might see a contradiction between Acts 2:4 and other parts of the Bible that suggest the Holy Spirit was given to believers in different ways or at different times. Others might wonder why this kind of event, where everyone speaks in different languages, doesn't happen regularly in churches today. However, interpretations can vary widely, and many believe these differences can be harmonized with broader theological teachings.