The Gospel of the Kingdom is what God actually did and who we are as a result. It’s not ‘any gospel’ or ‘another gospel’ but it is Jesus’ Gospel and the Gospel that Paul called ‘My Gospel.’ So this is not a gospel that we can just make up or modify and still call it the gospel of Christ. It’s the gospel that decided the authentic nature of belonging in the Body of Christ.
‘The Spirit gives life; the flesh counts for nothing. The words I have spoken to you--they are full of the Spirit and life’ John 6.63 NIV.
“The canon of truth, as we learn from Irenaeus, gave an essentially trinitarian account of the Gospel and the whole mind of the apostles, and guided inquiry into ‘the mystery and economic activity of the living God’. (1)
It is the nature of God as God that is the nature of God in us that is the meaning of belonging to the Body of Christ, which is actually our inclusion in the Family of the trinity. We are not Gods. We are the sons/daughters of God.
NOT SO MYTERIOUS
This mystery and ‘economic activity’ is God’s achievement of salvation for us – a salvation that is more than mere salvation but the achievement of our union (oneness) with God. This is a mystical union because it is not found in the law or externalities although they are the evidence of them in which case the are the fruits of the Spirit. The fruit of oneness is life in all its forms. Fruit of the kind that Jesus called spirit and life.
The spirit of sonship is not a name or a designation. It’s a state of being in the oneness that is our inheritance of Christ our life. It’s not religion or even ‘christianity.’ It’s a raw ‘Christ in you, Christ as you’ incarnation of the fullness of God in your person and in us ours.
(1) Torrance, Thomas F.. The Christian Doctrine of God, One Being Three Persons (T&T Clark Cornerstones) (p. 75). Bloomsbury Publishing. Kindle Edition.