I will be your God throughout your lifetime—
until your hair is white with age.
I made you, and I will care for you.
I will carry you along and save you. (Isaiah 46:4)
It's no accident we've made it to this age. God can use people of any age to accomplish great things. Moses, Abraham, Anna, Simeon.

For ever since the world was created, people have seen the earth and sky. Through everything God made, they can clearly see his invisible qualities—his eternal power and divine nature. So they have no excuse for not knowing God.
~ Romans 1:20