Commentators overwhelmingly agree that this verse promises divine vindication for those whose character is unjustly attacked. When you are slandered or misunderstood, you are encouraged to entrust your reputation to God. He will act as your defender, eventually making your innocence and righteousness shine as clearly as the noonday sun. As Albert Barnes notes, it's often better to focus on doing right and trust God than to exhaust yourself trying to counter every false claim.