10 As it is written: “There is no one righteous, not even one; 11 there is no one who understands, no one who seeks God. 12 All have turned away, they have together become worthless; there is no one who does good, not even one.” 13 “Their throats are open graves; their tongues practice deceit.” “The poison of vipers is on their lips.” 14 “Their mouths are full of cursing and bitterness.” 15 “Their feet are swift to shed blood; 16 ruin and misery mark their ways, 17 and the way of peace they do not know.” 18 “There is no fear of God before their eyes.”
29 Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. 30 And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption. 31 Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice. 32 Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.
5 Put to death, therefore, whatever belongs to your earthly nature: sexual immorality, impurity, lust, evil desires and greed, which is idolatry. 6 Because of these, the wrath of God is coming. 7 You used to walk in these ways, in the life you once lived. 8 But now you must rid yourselves of all such things as these: anger, rage, malice, slander, and filthy language from your lips. 9 Do not lie to each other, since you have taken off your old self with its practices 10 and have put on the new self, which is being renewed in knowledge in the image of its Creator.
5 Those who live according to the sinful nature have their minds set on what that nature desires; but those who live in accordance with the Spirit have their minds set on what the Spirit desires. 6 The mind of sinful man is death, but the mind controlled by the Spirit is life and peace; 7 the sinful mind is hostile to God. It does not submit to God's law, nor can it do so. 8 Those controlled by the sinful nature cannot please God.
26 “In your anger do not sin”: Do not let the sun go down while you are still angry, 27 and do not give the devil a foothold.
14 Make every effort to live in peace with all men and to be holy; without holiness no one will see the Lord. 15 See to it that no one misses the grace of God and that no bitter root grows up to cause trouble and defile many.
9 With the tongue we praise our Lord and Father, and with it we curse men, who have been made in God's likeness. 10 Out of the same mouth come praise and cursing. My brothers, this should not be. 11 Can both fresh water and salt water flow from the same spring? 12 My brothers, can a fig tree bear olives, or a grapevine bear figs? Neither can a salt spring produce fresh water.
21 “There is no peace,” says my God, “for the wicked.”
“Bitterness is a figurative term denoting that fretted and irritable state of mind that keeps a man in perpetual animosity – that inclines him to harsh and uncharitable opinions of men and things – that makes him sour, crabbed, and repulsive in his general demeanor – that brings scowl on his face, and infuses venom into the words of his tongue.” John Eadie
“Bitterness is a smoldering resentment. It is the end result of suppressed anger, and it defiles us. Anger must not be suppressed – it must be dealt with. If it isn’t it leads to more wrath and anger.” J. D. Watson
“The Hebrew word shalom is often translated ‘peace,’ but its full meaning has a deeper richness to it. Shalom is a sense of completeness and soundness and living well. It implies safety, good health, prosperity, tranquility, and contentment. Shalom means favor, fulfillment, restoration, harmony, and reconciliation. God is Jehovah Shalom, the God of peace. Shalom meets the human heart's deepest longings and is the greatest measure of contentment. True shalom cannot exist in a heart that is void of Jesus Christ. Shalom cannot exist in a heart that is divided between a love of God and a love of the world. There is no room for peace in a heart that is harboring anxiety, distrust, greed, anger, or bitterness. The Messiah is referred to as the Prince of Peace in Isaiah 9:6. Although the text translates to ‘prince,’ the original meaning of the word embodies the power of the king. The prince here has the full authority, delegation, and dignity of the king. Only when the Prince of Peace rules in our hearts and minds can we have peace. Until we submit to His authority and power, our peace will be incomplete.” Michael Youssef
“Do not drink the toxic combination of bitterness and revenge, that poisonous concoction that not only destroys the lives of others but corrodes the vessel that contains it.” Chuck Swindoll
“All the commandments of God are commandments of love tending to our real good and great happiness; far from being grievous to those who have faith and love, the practice thereof is life and peace. The world may think it a grievous burden; but this is a great mistake indeed. Sin is grievous. In hatred, envy, anger, revenge, pride, there is nothing but torment and slavery; but in love there is a sweet rest and pleasure. Thus a sinner always punishes himself, and is robbed of great peace and blessing, by transgressing the commandments of God.” K. H. Von Bogatzky
“No matter how just your words may be, you ruin everything when you speak in anger.” John Chrysostom
“When you cling tightly to bitterness, anger, resentment, and unforgiveness, elevating them above your relationship with God, they become "idols" in your life. For each idol you are willing to destroy, you will gain more than you lose. Each time you surrender something to God, you will remove another hindrance to a productive life of faith and prayer. Every idol that is demolished will bring you new treasures of grace and peace.” Michael Youssef
“Forgiveness saves us the expense of anger, the cost of hatred, the waste of spirits.” Hannah More