My friend and I aren't related in any way, and yet, we are. She's my sister, I'm her brother. We have the same Father in heaven, He's adopted both of us into His family for all eternity. We christians have such a deep, familial connection with each other here on earth that I think is very rarely ever really realized. At least, I know I have seldom ever really thought of it, much less comprehended the significance of it. Just the thought of it is bewildering to me. God isn't only a Father to the fatherless, he has also given the fatherless a family to surround them, guide them, correct them, and encourage them.
So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God, ~Ephesians 2:19