Romans 1:20 For, from the very creation of the world, His invisible perfections--namely His eternal power and divine nature--have been rendered intelligible and clearly visible by His works, so that these men are without excuse. (WEY)
1 Corinthians 14:9 And so with you; if with the living voice you fail to utter intelligible words, how will people know what you are saying? You will be talking to the winds. (WEY RSV NIV)
1 Corinthians 14:19 However in the assembly I would rather speak five words with my understanding, that I might instruct others also, than ten thousand words in another language. (See NIV)