Reference

James 3:8-12 (NASB)

But no one among mankind can tame the tongue; it is a restless evil, full of deadly poison. 

With it we bless our Lord and Father, and with it we curse people, who have been made in the likeness of God; 

10 from the same mouth come both blessing and cursing. My brothers and sisters, these things should not be this way. 

11 Does a spring send out from the same opening both fresh and bitter water? 

12 Can a fig tree, my brothers and sisters, bear olives, or a vine bear figs? Nor can salt water produce fresh.