Romans 10:14-15
But how, say you, shall they call on him on whom they have not believed? and how shall they believe in him of whom they have not heard?
Ephesians 4:29
let no obscene language defile your mouth, use only such as tends to edification, that it may be beneficial to the hearers.
Treasury of Scripture Knowledge
Summary
There is gold, and a multitude of rubies: but the lips of knowledge are a precious jewel.
Bible References
But
Romans 10:14
But how, say you, shall they call on him on whom they have not believed? and how shall they believe in him of whom they have not heard?
Ephesians 4:29
let no obscene language defile your mouth, use only such as tends to edification, that it may be beneficial to the hearers.