“A worthless person, a wicked man, walks with a perverse mouth [fraudulent deceitful speech]; he winks with his eyes, he shuffles his feet, he points with his fingers; perversity is in his heart, he devises evil continually, he sows discord. Therefore his calamity shall come suddenly; suddenly he shall be broken without remedy.” Proverbs 6:12-15.
“These six things the Lord hates, yes, seven are an abomination to Him: a proud look, a lying tongue, hands that shed innocent blood, a heart that devises wicked plans, feet that are swift in running to evil, a false witness who speaks lies, and one who sows discord among brethren.” Proverbs 6:16-19.
“And to the angel of the church of the Laodiceans write, ‘These things says the Amen, the Faithful and True Witness, the Beginning of the creation of God: I know your works, that you are neither cold nor hot. I could wish you were cold or hot. So then, because you are lukewarm, and neither cold nor hot, I will spew you out of My mouth.’” Revelation 3:14-16.
“Therefore by Him [Jesus] let us continually offer the sacrifice of praise to God, that is, the fruit of our lips, giving thanks to His name.” Hebrews 13:15.
“The fool has said in his heart, ‘There is no God.’ They are corrupt, and have done abominable iniquity; there is none who does good. God looks down from heaven upon the children of men, to see if there are any who understand, who seek God. Every one of them has turned aside; they have together become corrupt; there is none who does good, no, not one.” Psalm 53:1-3.