Psalm 71:18 in the World English Bible
Yes, even when I am old and gray-haired, God, don’t forsake me, until I have declared your strength to the next generation, your might to everyone who is to come.
Context
17 O God, thou hast taught me from my youth: and hitherto have I declared thy wondrous works.
18 Now also when I am old and grayheaded, O God, forsake me not; until I have shewed thy strength unto this generation, and thy power to every one that is to come.
19 Thy righteousness also, O God, is very high, who hast done great things: O God, who is like unto thee!