Control Your Temper
Eph 4:31 Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice
Likewise he says, "Now you must rid yourselves of all such things as these: anger, rage, malice, slander, and filthy language from your lips. Do not lie to each other, since you have taken off your old self with its practices." Col 3:8-9
These speak of one's disposition - the attitude of one's heart. "The good man brings good things out of the good stored up in his heart, and the evil man brings evil things out of the evil stored up in his heart. For out of the overflow of his heart his mouth speaks." Luke 6:45 So "Above all else, guard your heart, for it is the wellspring of life." Pr 4:23
So control your temper or your temper will control you. "Better a patient man than a warrior, a man who controls his temper than one who takes a city." Pr 16:32 And "a fool always loses his temper, But a wise man holds it back."Pr 29:11
While the worldly swing between free uninhibited expression and being disingenuous, the Christians are to speak the truth while exercising self-control over one's passions.