"The righteous will flourish like a palm tree, they will grow like a cedar of Lebanon." (Psalm 92:12)
Psalm 92, the only psalm explicitly headed as a song for the Sabbath day, is a meditation on the goodness of praise and the justice of God. The psalmist declares that it is good to praise the LORD, to proclaim his love in the morning and his faithfulness at night. This is the rhythm of daily prayer: morning and evening, love and faithfulness, the beginning and end of every day bracketed by the acknowledgment of who God is.
The psalm then reflects on the puzzle of the prospering wicked: the foolish cannot understand that the wicked flourish like grass only to be destroyed forever. But the righteous are different: The righteous will flourish like a palm tree, they will grow like a cedar of Lebanon, planted in the house of the LORD, they will flourish in the courts of our God. They will still bear fruit in old age, they will stay fresh and green, proclaiming the LORD is upright. The image of the elder who still bears fruit is one of the most hopeful in Scripture. Holiness has no retirement age. The cedar grows for centuries and is still strong. St. Francis of Assisi, near the end of his life, said he was still only beginning. That is the spirit of Psalm 92.
Brothers and sisters, the Sabbath rest of this psalm is not mere inactivity. It is the deliberate reorientation of the week around praise: it is good to praise the LORD. Make praise a discipline, not a feeling. Come to it in the morning before you have assessed whether you feel like it. Come to it in the evening regardless of how the day went. That faithfulness is the soil in which the palm tree grows.
Lord God, it is good to give thanks to you and to proclaim your love in the morning and your faithfulness at night. Plant us in your house, that we may flourish like the palm tree and still bear fruit in our old age, always proclaiming that you are upright. Through Christ our Lord. Amen.