David
Psalm 92:14ESV·traditional attribution

They still bear fruit in old age; they are ever full of sap and green,

John Calvin Reformed @genevareformer

PSALM 92 This psalm contains an exhortation to praise God, and shows how much ground we have for this exercise from the works of God, insisting, especially, upon his justice, displayed in the protection of his people, and the destruction of the wicked.

Commenting on Psalm 92:1-15

C.H. Spurgeon Reformed Baptist @princeofpreachers

They shall still bring forth fruit in old age. Nature decays but grace thrives. Fruit, as far as nature is concerned, belongs to days of vigour; but in the garden of grace, when plants are weak in themselves, they become strong in the Lord, and abound in fruit acceptable with God.

Matthew Henry Presbyterian @wholebiblehenry

The psalmist had said (Psa 92:4) that from the works of God he would take occasion to triumph; and here he does so. I. He triumphs over God's enemies (Psa 92:7, Psa 92:9, Psa 92:11), triumphs in the foresight of their destruction, not as it would be the misery of his fellow-creatures, but as it would redound to the honour of God's justice and holiness.

Commenting on Psalm 92:7-15