Psalm 1 contrasts the righteous and the wicked. It describes the righteous as those who do not follow the wicked, but delight in God's law and meditate on it day and night. They are like trees planted by streams of water that yield fruit and prosper. In contrast, the wicked are like chaff that the wind blows away and will not stand in judgment. The Lord watches over the righteous but the way of the wicked will be destroyed.