Leading a righteous life lends vigor to old age

Psalm 92:12-15

The righteous shall flourish like the palm tree. He will grow like a cedar in Lebanon. They are planted in the LORD’s house. They will flourish in our God’s courts. They will still produce fruit in old age. They will be full of sap and green, to show that the LORD is upright. He is my rock, and there is no unrighteousness in him.