We know that Jesus is King Of Kings and Lord Of Lords.
We know that the Holy Spirit is His Father and ours by Faith in Christ Jesus.
How is it that we can be a Child Of The King while having the same Father?
The Spirit Of Christ is the Holy Spirit. We are One with the Father and Son because we are of the same Spirit, the Holy Spirit.
Hence, I am a Child Of The King and a joint heir with King Jesus, my brother.