English Standard Version
Otherwise, if you give thanks with your spirit, how can anyone in the position of an outsider say "Amen" to your thanksgiving when he does not know what you are saying?New International Version
If you are praising God with your spirit, how can one who finds himself among those who do not understand say "Amen" to your thanksgiving, since he does not know what you are saying?Catholic Public Domain Version
Otherwise, if you have blessed only with the spirit, how can someone, in a state of ignorance, add an "Amen" to your blessing? For he does not know what you are saying