What does the Bible say about rendering good for evil?

The Scriptures emphasize the importance of rendering good for evil. In Romans 12:17-21, Paul instructs believers not to repay evil for evil but to do good to their enemies, citing God's promise that vengeance belongs to Him. David exemplified this principle when he had the opportunity to kill Saul but chose instead to spare his life, demonstrating both self-control and obedience to God's sovereign plan. His heart smote him for merely cutting off a piece of Saul's robe, illustrating the deep conviction of not harming God’s anointed. This act signifies trust in God’s providence, allowing Him to bring justice in His timing and manner, inviting believers to practice patience and trust versus immediate retribution.