1 Corinthians 14:13
Therefore let him who speaks in another language pray that he may interpret.
World English Bible (Public Domain)
In context
Before · 1 Corinthians 14:11–12
11If then I don’t know the meaning of the language, I would be to him who speaks a foreigner, and he who speaks would be a foreigner to me. 12So also you, since you are zealous for spiritual gifts, seek that you may abound to the building up of the assembly.
13Therefore let him who speaks in another language pray that he may interpret.