Contradiction with 1 Corinthians 14:28
1 Corinthians 14:28 states that if there is no one to interpret, those speaking in tongues should keep silent, which might seem contradictory to speaking openly as suggested in 1 Corinthians 14:24 for the edification of the church.
1 Corinthians 14:28: But if there be no interpreter, let him keep silence in the church; and let him speak to himself, and to God.
Contradiction with 1 Corinthians 14:34
1 Corinthians 14:34 instructs women to keep silent in churches, which could contradict the inclusive nature of prophesying mentioned in 1 Corinthians 14:24.
1 Corinthians 14:34: Let your women keep silence in the churches: for it is not permitted unto them to speak; but [they are commanded] to be under obedience, as also saith the law.
Contradiction with 1 Corinthians 12:30
1 Corinthians 12:30 indicates not all possess gifts of healing or speaking in tongues, potentially contradicting the encouragement of prophesying for all in 1 Corinthians 14:24.
1 Corinthians 12:30: Have all the gifts of healing? do all speak with tongues? do all interpret?
Contradiction with 1 Corinthians 14:2
1 Corinthians 14:2 suggests speaking in tongues speaks to God, not to men, which can contradict the idea of speaking for audience understanding as in 1 Corinthians 14:24.
1 Corinthians 14:2: For he that speaketh in an [unknown] tongue speaketh not unto men, but unto God: for no man understandeth [him]; howbeit in the spirit he speaketh mysteries. [understandeth: Gr. heareth]