20. Now, when a man does not deal fairly with his neighbor, but practices dishonesty and deceit, be it in matters spiritual or temporal (and the world is ever deceitful in all transactions), then certainly the old man holds sway and not righteousness nor holiness, however much the man may effect a good appearance and evade the courts. For such conduct does not reflect God's image, but the devil's. For the heart does not rely on God and his truth, otherwise it would war with fraud and deception; but its object is to clothe itself with a misleading garb, even assuming the name of God, and thus to deceive, belie, betray and forsake its neighbor at the bidding of every fiendish whim, and all for the satisfaction of its avarice, selfishness and pride.
21. In contrast thereto you can recognize the new man. He speaks the truth and hates lies, not only those momentous lies against the first table of the Ten Commandments, but also those against the second table; for he deals faithfully and in a brotherly way with others, doing as he would be done by himself. Thus should Christians live with each other, as members of one body, according to the apostle, and as having in Christ all things common and alike.
"Be ye angry and sin not: let not the sun go down upon your wrath."
22. Half the sins which the world has learned of its lord and master, the devil, consist in lying and deceiving, and that in the name and appearance of truth. No one wants to be called a liar, and even the devil covers his lies with the name of truth. The other half, which is easier to recognize, consists in wrath and its fruits. And this class is usually the result of the other. The world, for its own advantage, lies and deceives; and when it sees mankind acting in opposition to its wishes, or beholds its lies exposed and its schemes thwarted, it begins to rage in wrath against God, endeavoring to avenge itself and inflict harm, but fraudulently disguising its wicked motive under the plea of having good and abundant reasons for its action.
23. Therefore Paul admonishes the Christians as new creatures, to guard against this vice of wrath, adducing the fourth verse of the fourth Psalm: "Stand in awe and sin not." The repetition of this passage sounds, in Paul's rendering, as if permission to be angry were given; he says: "Be ye angry, and sin not." But Paul is taking into consideration the way of the world. Men are tempted and moved to anger. There are no clean records. Under sudden provocation the heart swells with ire, while the devil busily fans the flame; for he is ever alert to stamp upon us his seal and image and make us like unto him, either through error and false doctrine, or through wrath and murder in conflict with love and patience. These two forms of evil you will encounter, especially if you make an effort to be a godly Christian, to defend the truth and to live uprightly in the sight of all. You will meet with all manner of malice aforethought and deceit, and with faithlessness and malignity on the part of those you have benefited; again, with unmasked violence and injustice on the part of those who should protect you and see to your interests. This will hurt and move you to wrath. Yea, in your own house and among your dear Christian brethren you will often meet with that which vexes you; again, a word of yours may hurt their feelings. And it will not be otherwise. This life of ours is so constituted that such conditions must be. Flesh and blood cannot but be stirred at times by wrath and impatience, especially when it receives evil for good; and the devil is ever at hand kindling your anger and endeavoring to fan into a blaze the wrath and ill humor between yourself and your neighbor.
24. But right here, says the apostle, you should beware and not sin; not give rein, nor yield to the impulse and promptings of wrath. That you may indeed be moved, the apostle would say, I well know, and you may fancy to have the best of reasons for exhibiting anger and vengeance; but beware of doing what your wrath would have you do: and if overcome by wrath and led to rashness, do not continue in it, do not harbor it, but subdue and restrain it, the sooner the better; do not suffer it to take root or to remain with you over night.
25. If followed, wrath will not suffer you to do a single right thing, as James affirms (ch. 1, 20). It causes man to fall and sin against God and his neighbor. Even the heathen have seen that wrath gets the better of reason and is never the source of good counsel. In line with this, we read that St. Ambrose reproved the emperor Theodosius for having, while in a rage, caused the execution of many persons in Thessalonica; and that he succeeded in having the emperor issue a rescript to the effect that no one should be executed, even on his imperial order and command, until a full month had passed by, thus affording an opportunity to rescind the order if given in haste and wrath.
26. Therefore the Psalm says: When wrath attacks and moves you, do not at once give it leave to do its will. Therein you would certainly commit sin. But go into your chamber, commune and take counsel with yourself, pray the Lord's Prayer, repeat some good passages from God's Word, curb yourself and confide in God; he will uphold your rights.
27. It is this the apostle has in mind when saying: "Let not the sun go down upon your wrath." A Christian must not entertain wrath; he should instantly quench and stifle it. It is the part of the new man to control anger, that the devil may not move him from his new-found faith and make him lose what he has received. If he yields to these instigations of his flesh, he thereby returns to the error and condemnation in the old man and loses control of himself, following his own desires. Then he adorns a lie with the appearance of truth, claiming the right to be angry and take revenge; just as the world does when it asserts: This fellow has done me infinite violence and injustice; am I to suffer it? I have a just cause and shall not recline my head in ease until he is repaid! By such talk it loses its case before both God and men; as the saying goes: He that strikes back has the most unjust cause.
28. Both divine and human justice forbids that a man be judge in his own case. For this very reason God has established governmental and judicial authority, in his stead to punish transgressions, which—when properly administered—is not man's but God's judgment. He therefore that invades such judgment, invades the authority of God himself; he commits a double wrong and merits double condemnation. If you desire to seek and obtain redress in the courts, you are at liberty to do so, provided you proceed in the proper way, at the proper place and with those to whom God has entrusted authority. To these authorities you may appeal for redress. If you obtain it according to law, well and good; if not, you must suffer wrong and commit your case to God, as we have explained more fully elsewhere.