When God says that you are related to someone by blood, it usually means that you have familial ties, that you are genetically connected, and have a relationship from birth. The ether knows of no other blood relationship, but the human spirit knows that true blood relationships can be established at any time. These are the relationships that connect you to the family of God. These are the relationships that tell the world who you are, what you do, how you live, as well as your ultimate destination.
Whenever you are tempted to question your role on this planet, and your reason for being here, look to your relatives, your true blood relatives, for a poignant reminder. They also are the one source from which you can obtain a reconfirmation of who you are.
If you are part of the family of God, you probably question why you should consider someone to be family if you barely know them, or don't know them at all. The reason is that when you have been sealed and raptured, you essentially become part of the same ether as the Lord God Almighty himself. Thus, you and everyone who has been sealed and raptured are part of God's ether. When you are part of the same ether, whatever happens in one part also happens in every other part, and affects every other part.
You can reap all of the benefits of being in God's kingdom only to the extent that you want all of those benefits for every other member of the kingdom, for every person who will become a member, and for every person whose membership will be restored. Thus will the kingdom of God truly be a family of God. Thus will the kingdom of God truly be perfect.
The Lord God Almighty El Shaddai