Proverbs 15:1 - A soft answer turneth away wrath: but grievous words stir up anger.
Ephesians 4:29 - Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers. 1Then said he unto the disciples, It is impossible but that offences will come: but woe unto him, through whom they come! 2It were better for him that a millstone were hanged about his neck, and he cast into the sea, than that he should offend one of these little ones. 3Take heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repent, forgive him. 4And if he trespass against thee seven times in a day, and seven times in a day turn again to thee, saying, I repent; thou shalt forgive him. 5And the apostles said unto the Lord, Increase our faith. 12For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ: 13Till we all come in the unity of the faith, and of the knowledge of the Son of God, unto a perfect man, unto the measure of the stature of the fulness of Christ: 14That we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine, by the sleight of men, and cunning craftiness, whereby they lie in wait to deceive; 15But speaking the truth in love, may grow up into him in all things, which is the head, even Christ: 16From whom the whole body fitly joined together and compacted by that which every joint supplieth, according to the effectual working in the measure of every part, maketh increase of the body unto the edifying of itself in love. 17This I say therefore, and testify in the Lord, that ye henceforth walk not as other Gentiles walk, in the vanity of their mind, 18Having the understanding darkened, being alienated from the life of God through the ignorance that is in them, because of the blindness of their heart: