1 John 2:14 I have written to you, fathers, because you have known Him who is from the beginning. I have written to you, young men, because you are strong, and the word of God abides in you, And you have overcome the wicked one.
Whether you are a grown up and a child you can know God. As an adult you want to be able to care for your children. If you have known God for a long time then you may be called an adult in Christ or God, whereas you may be called a child in God if you have not known Him for long. If you are an adult in God it will seem natural for you to want to care for people who have not known God for long.
God wants us to be a family in God so that we will love each other and care for each other like families should.
If your family seems to have something missing, just maybe they are missing God out…