David starts with repeated advice: do not fret because of evildoers or be envious of wrongdoers, for they will soon fade like grass. Instead, trust in the Lord and do good, dwell in the land and befriend faithfulness; delight yourself in the Lord and he will give you the desires of your heart. Commit your way to the Lord, trust in him, and he will bring your righteousness forth as the light.
Then he urges us to be still before the Lord and wait for him, and to let go of anger. In a little while the wicked will be no more, but the meek will inherit the land and delight in abundant peace. The wicked plot against the righteous, but their swords will pierce their own hearts. Better is the little of the righteous than the abundance of many wicked, for the Lord upholds the righteous and knows the days of the blameless.
In the next part David teaches that the righteous gives generously, while the wicked borrows and does not repay. A man's steps are established by the Lord; though he fall, he will not be cast headlong, for the Lord upholds him with his hand. David says he was young and now is old and has never seen the righteous forsaken. Turn from evil and do good; the Lord loves justice and does not forsake his saints. He ends with his own experience: he saw the wicked in great power like a green tree, but he passed away and was no more. Mark the blameless: the man of peace has a future, and the salvation of the righteous is from the Lord, their stronghold in the time of trouble.