What does 1 Corinthians 14:13 mean?
Paul has shown the Christians in Corinth why their application of the spiritual gift of speaking in tongues during the church service is unwise. In short, it's not helpful when nobody understands the words being spoken. He adds in the following verses that the exception to this rule is if the speaker or someone else can interpret what is being said.For that reason, Paul tells those with the spiritual gift of speaking in tongues to pray for the additional gift of the interpretation of tongues (1 Corinthians 12:10). This gift would allow a believer to supernaturally understand what was being said in an unknown language and to translate that into the language of those present so they could understand, as well.
Once again, Paul makes clear that spiritual gifts cannot be acquired through hard work or training or by doing good works. Spiritual gifts must be given by God through the Holy Spirit. Christians are powerless to receive them otherwise. That's why Paul tells gifted tongues-speakers to pray for this specific gift of interpretation.