James 4:11-12 (KJV)
Speak not evil one of another, brethren. He that speaketh evil of his brother, and judgeth his brother, speaketh evil of the law, and judgeth the law: but if thou judge the law, thou art not a doer of the law, but a judge. There is one lawgiver, who is able to save and to destroy: who art thou that judgest another?
James 3:1-12 (KJV)
My brethren, be not many masters, knowing that we shall receive the greater condemnation. For in many things we offend all. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body. Behold, we put bits in the horses' mouths, that they may obey us; and we turn about their whole body. Behold also the ships, which though they be so great, and are driven of fierce winds, yet are they turned about with a very small helm, whithersoever the governor listeth. Even so the tongue is a little member, and boasteth great things. Behold, how great a matter a little fire kindleth! And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell. For every kind of beasts, and of birds, and of serpents, and of things in the sea, is tamed, and hath been tamed of mankind: But the tongue can no man tame; it is an unruly evil, full of deadly poison. Therewith bless we God, even the Father; and therewith curse we men, which are made after the similitude of God. Out of the same mouth proceedeth blessing and cursing. My brethren, these things ought not so to be. Doth a fountain send forth at the same place sweet water and bitter? Can the fig tree, my brethren, bear olive berries? Either a vine, figs? So can no fountain both yield salt water and fresh.
Galatians 6:1-2 (ESV)
Brothers, if anyone is caught in any transgression, you who are spiritual should restore him in a spirit of gentleness. Keep watch on yourself, lest you too be tempted. Bear one another's burdens, and so fulfill the law of Christ.
I Peter 1:22-25 (ESV)
Having purified your souls by your obedience to the truth for a sincere brotherly love, love one another earnestly from a pure heart, since you have been brn again, not of perishable seed but of imperishable, through the living and abiding word of God: for "All flesh is like grass and all its glory like the flower of grass. The grass withers, and the flower falls, but the word of the Lord remains forever." And this word is the good news that was preached to you.
Joshua 22 (ESV)
At that time Joshua summoned the Reubenites and the Gadites and the half-tribe of Manasseh, and said to them, "You have kept all that Moses the servant of the LORD commanded you and have obeyed my voice in all that I have commanded you. You have not forsaken your brothers these many days, down to this day, but have been careful to keep the charge of the LORD your God. And now the LORD your God has given rest to your brothers, as he promised them. Therefore turn and go to your tents in the land where your possession lies, which Moses the servant of the LORD gave you on the other side of the Jordan. Only be very careful to observe the commandment and the law that Moses the servant of the LORD commanded you, to love the LORD your God, and to walk in all his ways and to keep his commandments and to cling to him and to serve him with all your heart and with all your soul." So Joshua blessed them and sent them away, and they went to their tents. Now to the one half of the tribe of Manasseh Moses had given a possession in Bashan, but to the other half Joshua had given a possession beside their brothers in the land west of the Jordan. And when Joshua sent them away to their homes and blessed them, he said to them, "God back to your tents with much wealth and with very much livestock, with silver, gold, bronze, and iron, and with much clothing. Divide the spoil of your enemies with your brothers." So the people of Reuben and the people of Gad and the half-tribe of Manasseh returned home, parting from the people of Israel at Shiloh, which is in the land of Canaan, to go to the land of Gilead, their own land of which they had possessed themselves by command of the LORD through Moses. And when they came to the region of the Jordan that is in the land of Canaan, the people of Reuben and the people of Gad and the half-tribe of Manasseh built there an altar by the Jordan, an altar of imposing size. And the people of Israel heard it said, "Behold, the people of Reuben and the people of God and the half-tribe of Manasseh have built the altar at the frontier of the land of Canaan, in the region about the Jordan, on the side that belongs to the people of Israel." And when the people of Israel heard about it, the whole assembly of the people of Israel gathered at Shiloh to make war against them. Then the people of Israel sent to the people of Reuben and the people of Gad and the half- tribe of Manasseh, in the land of Gilead, Phinehas the son of Eleazar the priest, and with him ten chiefs, one from each of the tribal families of Israel, every one of them the head of a family among the clans of Israel. And they came to the people of Reuben, the people of Gad, and the half-tribe of Manasseh, in the land of Gilead, and they said to them, "Thus says the whole congregation of the LORD, 'What is this breach of faith that you have committed against the God of Israel in turning away this day from following the LORD by building yourselves an altar this day in rebellion against the LORD? Have we not had enough of the sin at Peor from which even yet we have not cleansed ourselves, and for which there came a plague upon the congregation of the LORD, that you too must turn away this day from following the LORD? And if you too rebel against the LORD today then tomorrow he will be angry with the whole congregation of Israel. But now, if the land of your possession is unclean, pass over into the LORD's land where the LORD's tabernacle stands, and take for yourselves a possession among us. Only do not rebel against the LORD or make us as rebels by building for yourselves an altar other than the altar of the LORD our God. Did not Achan the son of Zerah break faith in the matter of the devoted things, and wrath fell upon all the congregation of Israel? And he did not perish alone for his iniquity.'" Then the people of Reuben, the people of Gad, and the half-tribe of Manasseh said in answer to the heads of the families of Israel, "The Mighty One, God, the LORD! The Mighty One, God, the LORD! He knows; and let Israel itself know! If it was in rebellion or in breach of faith against the LORD, do not spare us today for building an altar to turn away from following the LORD. Or if we did so to offer burnt offerings or grain offerings or peace offerings on it, may the LORD himself take vengeance. No, but we did it from fear that in time to come your children might say to our children, 'What have you to do with the LORD, the God of Israel? For the LORD has made the Jordan a boundary between us and you, you people of Reuben and people of Gad. You have no portion in the LORD.' So your children might make our children cease to worship the LORD. Therefore we said, 'Let us now build an altar, not for burnt offering, nor for sacrifice, but to be a witness between us and you, and between our generations after us, that we do perform the service of the LORD in his presence with our burnt offerings and sacrifices and peace offerings, so your children will not say to our children in time to come, "You have no portion in the LORD."' And we thought, If this should be said to us or to our descendants in time to come, we should say, 'Behold, the copy of the altar of the LORD, which our fathers made, not for burnt offerings, nor for sacrifice, but to be a witness between us and you.' Far be it from us that we should rebel against the LORD and turn away this day from following the LORD by building an altar for burnt offering, grain offering, or sacrifice, other than the altar of the LORD our God that stands before his tabernacle!" When Phinehas the priest and the chiefs of the congregation, the heads of the families of Israel who were with him, heard the words that the people of Reuben and the people of Gad and the people of Manasseh spoke, it was good in their eyes. And Phinehas the son of Eleazar the priest said to the people of Reuben and the people of Gad and the people of Manasseh, "Today we know that the LORD is in our midst, because you have not committed this breach of faith against the LORD. Now you have delivered the people of Israel form the hand of the LORD." Then Phinehas the son of Eleazar the priest, and the chiefs, returned from the people of Reuben and the people of Gad in the land of Gilead to the land of Canaan, to the people of Israel, and brought back word to them. And the report was good in the eyes of the people of Israel. And the people of Israel blessed God and spoke no more of making war against them to destroy the land where the people of Reuben and the people of Gad were settled. The people of Reuben and the people of Gad called the altar Witness, "For," they said, "it is a witness between us that the LORD is God."
Proverbs 23:9 (ESV)
Do not speak in the hearing of a fool, for he will despise the good sense of your words.
Proverbs 31:8-9 (ESV)
Open your mouth for the mute, for the rights of all who are destitute. Open your mouth, judge righteously, defend the rights of the poor and needy.
Proverbs 19:11 (ESV)
A fool gives full vent to his spirit, but a wise man quietly holds it back.
Ephesians 4:14-15; 24-25 (ESV)
So that we may no longer be children, tossed to and fro by the waves and carried about by every wind of doctrine, by human cunning, by craftiness in deceitful schemes. Rather, speaking the truth in love, we are to grow up in every way into him who is the head, into Christ. And to put on the new self, created after the likeness of God in true righteousness and holiness. Therefore, having put away falsehood, let each on of you speak the truth with his nighbor, for we are members one of another.
Ephesians 4:29-30 (ESV)
Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear. And do not grieve the Holy Spirit of God, by whom you were sealed for the day of redemption.