Ecclesiastes 12:2-3

2Remember him before the light of the sun, moon, and stars is dim to your old eyes, and rain clouds continually darken your sky.

3Remember him before your legs—the guards of your house—start to tremble; and before your shoulders—the strong men—stoop. Remember him before your teeth—your few remaining servants—stop grinding; and before your eyes—the women looking through the windows—see dimly.