Ephesians 3:15. “Of whom the whole family in heaven and earth is named, ”
All believers are named as such by God. On earth, we call ourselves Christians, after Christ Jesus. The word actually meant “little Christs,” and was somewhat derisive when applied by unbelievers. Many in the family of believers are already in heaven, and we are all named of God. Maybe He calls us Christians, too. I don’t know. What I do know is that He knows each of us (Psalm 139) in an intimate and specific way; He has known us before the world began, and that is hard for us to understand.
What helps me with that is to remember that God does not function according to time, as we do. The past, present and future are all one to Him.
His ways, His thoughts, are higher than our ways and our thought.