Pride Leads to Unrighteous Anger

Quoting Jonathan Edwards:

Pride is one chief cause of undue anger. It is because men are proud, and exalt themselves in their own hearts, that they are revengeful, and are apt to be excited, and to make great things out of little ones that may be against themselves. Yea, they even treat as vices things that are in themselves virtues, when they think their honor is touched, or when their will is crossed. And it is pride that makes men so unreasonable and rash in their anger, and raises it to such a high degree, and continues it so long, and often keeps it up in the form of habitual malice… If men sought not chiefly their own private and selfish interests, but the glory of God and the common good, then their spirit would be a great deal more stirred up in God’s cause than in their own; and they would not be prone to hasty, rash, inconsiderate, immoderate, and long-continued wrath, with any who might have injured or provoked them; but they would in a great measure forget themselves for God’s sake, and from their zeal for the honor of Christ. The end they would aim at, would be, not making themselves great, or getting their own will, but the glory of God and the good of their fellow-beings. (“The Spirit of Love the Opposite of An Angry or Wrathful Spirit”, 1 Corinthians 13:5)