First Corinthians 14:14 states that when a person prays in tongues, he does not know what he is saying, since it is spoken in a language he does not know. Further, no one else can understand what is being said, unless there is an interpreter (1 Corinthians 14:27-28).
Sinasabi sa 1 Corinto 14:14 na kung nananalangin ang isang tao sa ibang wika, hindi niya alam ang kanyang sinasabi dahil ito ay sinasalita sa isang wika na hindi niya nalalaman. Bukod dito, walang makauunawa kung ano ang kanyang sinasabi, malibang may magpapaliwanag (1 Corinto 14:27-28).