Paul is emphasizing that the gift of prophecy is greater than the gift of speaking in tongues. AT: "The one who prophesies has a greater gift" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
This means to tell what someone has said in a language to others who do not understand that language. See how this is translated in [1 Corinthians 2:13](../02/12.md).
This can be a statement. AT: "I will not benefit you." or "I will not have done anything that helps you." (See: [[rc://en/ta/man/translate/figs-rquestion]])