Ephesians 1:5 Predestinating us unto sonship through Jesus Christ to Himself, according to the good pleasure of His will, Romans 8:17 And if children, heirs also; on the one hand, heirs of God; on the other, joint heirs with Christ...
Not only do we have the Spirit of the Son of God and the life of the Son of God, but we are also in the position of the Son of God. Actually, sonship is more specifically related to position than it is to life. Thus, sonship is a legal matter.
For example, a certain person may not actually have been born the son of a rich man. But if, legally speaking, he has the position of being that man's son, he will be entitled to his inheritance. Hallelujah, we have the Spirit of the Son of God, the life of the Son of God, and also the position of the Son of God.
All this is for our inheritance. Because we are God's sons with the sonship, we shall inherit all that God is and all that He has. We have the legal position to inherit all the riches of the Father.
If I walk into a restaurant and proclaim to the people sitting there that I am a son of God, they will think that I have a mental problem. But when the New Jerusalem comes, there will be no need for us to say anything. Everyone will be able to see that we are the sons of God in position.
All the angels will say, “Look at those people-they are the sons of God. They are enjoying God and inheriting all that God is in the New Jerusalem.”