Whoever thinks parenting ends when a son or daughter turns 21 doesn’t understand that a parent never quits caring.
I always feel a heart-tug when I read the apostle Paul’s words: “My dear children, for whom I am again in the pains of childbirth until Christ is formed in you” (Galatians 1:19 (NIV). Isn’t that a good description of your concern for your kids’ spiritual welfare--it’s like childbirth. If you have a personal relationship with Jesus, you long for each of your kids to make progress on their journey into grace too.