Jeremiah 29:11 β "I know the thoughts that I think toward you, saith the LORD, thoughts of peace, and not of evil, to give you an expected end" β is almost always quoted without its context. God spoke this to Israel in Babylon, after their city had been destroyed and their children had been led away. He tells them to build houses, plant gardens, marry, have children, pray for the city they're in. He is saying: the next chapter of your life is not nothing. Build into it.
The phrase "expected end" is tiqvah β hope, the thing stretched toward. The same word as the thread of scarlet that Rahab hung from her window in Joshua 2, a thread that would save her life. In the empty nest season, the question tiqvah poses is: what is the thread stretching toward now? Scripture answers that the story does not end when the active parenting chapter closes.
Psalm 92 is a psalm about flourishing in later life: "They shall still bring forth fruit in old age; they shall be fat and flourishing." The word for flourishing β raanan β means green, fresh, vigorous. The image is a tree that is still producing. Not retired to passivity, but entering a different kind of fruitfulness β different from the first half of life, but not lesser.