Psalm 1
The Psalter opens by contrasting the righteous tree with wind-blown chaff.
As the opening psalm, Psalm 1 sets the tone for the whole book: the blessed man avoids the counsel of the ungodly and instead delights in God's law, becoming 'like a tree planted by the rivers of water.' See how the theme develops in Psalms 2.
HAPPY IS the man that hath not walked in the counsel of the wicked, nor stood in the way of sinners, nor sat in the seat of the scornful.
But his delight is in the law of HaShem; and in His law doth he meditate day and night.
And he shall be like a tree planted by streams of water, that bringeth forth its fruit in its season, and whose leaf doth not wither; and in whatsoever he doeth he shall prosper.
Not so the wicked; but they are like the chaff which the wind driveth away.
Therefore the wicked shall not stand in the judgment, nor sinners in the congregation of the righteous.
For HaShem regardeth the way of the righteous; but the way of the wicked shall perish.