God knows. He cares. He sees.

The righteous shall rejoice when he sees the vengeance;
He shall wash his feet in the blood of the wicked,

So that men will say, “Surely there is a reward for the righteous; Surely He is God who judges in the earth.” (Psalm 58:10-11)

David was upset with those who wronged others . . . Rightly so! However, he left it up to God to deal with them. Though early in this psalm, he asks for harm to come to them, he realizes that vengeance is the Lord's! (Romans 12:19)

Things do not always go right for us. It seems as though the more We do to honor God and do right, the more we lose and those doing evil win! That might be true. However, God knows. He cares. He sees. He will have His justice one day!

That same David also wrote: Wait, I say, on the Lord. (Psalm 27:14) Listen to Jesus from the Sermon on the Mount . . . .

 You have heard that it was said, ‘You shall love your neighbor and hate your enemy.’ But I say to you, love your enemies, bless those who curse you, do good to those who hate you, and pray for those who spitefully use you and persecute you, that you may be sons of your Father in heaven; for He makes His sun rise on the evil and on the good, and sends rain on the just and on the unjust.  For if you love those who love you, what reward have you? (Matthew 5:43-46)