James 3:10-12

10Out of the same mouth come both blessing and cursing. These things, my brothers, should not be this way [for we have a moral obligation to speak in a manner that reflects our fear of God and profound respect for His precepts].

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

12Can a fig tree, my brothers, produce olives, or a grapevine produce figs? Nor can salt water produce fresh.