Psalm 1:3-4

A little more than a month ago, I finished reading Proverbs in the NIV and started over again with the Psalms (in the ESV this time).  Previously, I'd noticed the contrast between the tree and the chaff in Psalm 1:3-4, but in reading it again last month, I realized that I'd been considering only one facet of this contrast.

3 He is like a tree planted by streams of water that yields it fruit in its season, and its leaf does not wither.  In all that he does, he prospers.  4 The wicked are not so, but are like chaff that the wind drives away.

I'd been focusing only on the agricultural nature of these similes and the contrast between the prosperity of the living tree and the inactivity of the worthless and dead chaff, but the two also differ in their positions:  the tree is firmly "planted," but the chaff is "drive[n] away" by the wind.  The man who delights in and meditates on the law of the Lord has an arboreal steadfastness that the wicked man does not.