To be angry and sin not means to express anger in a way that does not lead to sin, including resentment or unholy actions.
In Ephesians 4:26, Paul instructs believers to be angry but sin not, indicating that there are righteous and justifiable reasons for anger, especially concerning God's glory and justice. However, he cautions against allowing anger to lead to sin. This involves managing anger properly and avoiding excess or resentment that can result in discord or hostility. Paul further advises that unresolved anger should not be allowed to fester, as seen in the instruction to not let the sun go down on our wrath. The goal is to maintain a spirit of peace and reconciliation rather than allowing anger to turn into bitterness or conflict.
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