Ephesians 4:12-16

4:12 to equip the saints for the work of ministry, that is, to build up the body of Christ, 4:13 until we all attain to the unity of the faith and of the knowledge of the Son of God – a mature person, attaining to the measure of Christ’s full stature. 4:14 So we are no longer to be children, tossed back and forth by waves and carried about by every wind of teaching by the trickery of people who craftily carry out their deceitful schemes. 4:15 But practicing the truth in love, we will in all things grow up into Christ, who is the head. 4:16 From him the whole body grows, fitted and held together through every supporting ligament. As each one does its part, the body grows in love.

Ephesians 4:29

4:29 You must let no unwholesome word come out of your mouth, but only what is beneficial for the building up of the one in need, that it may give grace to those who hear.