1 Peter 3:15
adore the Lord God in your hearts, and be ready to show with modesty and respect to every one that asks it, what ground there is for the expectations you have:
Matthew 12:34
O degenerate race, how can ye, wicked as ye are, utter any thing that is good? for "'tis the overflowing of the heart that the mouth dischargeth."
Titus 1:10-11
For there are many, especially among the Jews, who are obstinate, vain talkers and deceivers;
James 3:6-8
the tongue is a brand that sets the world in a combustion: it is but one of the numerous organs of the body, yet it can blast whole assemblies: tipp'd with infernal sulphur it sets the whole train of life in a blaze.
2 Peter 2:18
when their language swells with vanity, by applying to the sensual passions of the licentious, they allure those who were escap'd for a while, from such deceivers: