The ungodly are not so: but are like the chaff which the wind driveth away.
 Therefore the ungodly shall not stand in the judgment, nor sinners in the congregation of the righteous.
 For the LORD knoweth the way of the righteous: but the way of the ungodly shall perish.
1:3: like a tree: This figure of speech presents an image of a desert date palm that has been firmly planted in a well-watered oasis (Jeremiah 17:8). Everything about the tree is valuable and productive. Likewise, the righteous are valuable and productive to God (33:15; 147:11). Shall prosper is not a guarantee of the future financial worth of the righteous; rather, the righteous person is always useful and productive to the Lord.
1:4,5 Like chaff, the refuse that is blown away by the wind after the grain harvest, the ungodly have no stability (35:5; 83:13). When the judgment comes, the ungodly will no longer stand.
1:6 The Bible speaks of two ways (Proverbs 2:8; 4:19), only one of which leads to God. This is a consistent theme, culminating in the celebrated words of Jesus, "I am the way" (John 14:6). The verb knoweth in this context refers not just to God's awareness, but to an intimate, personal knowledge (101:4). God is intimately involved with the way of the righteous, but has no connection with the way of the ungodly, except in judgment (146:9).