Jesus was not only Jesus of Nazareth. He was the Christ of God who had been with Father from eternity and was part of His nature and person. When Jesus declares Himself ‘one with Father’ He is not saying He is a created being who is one with Father in purpose. Jesus is saying that He is one in the ‘Godness’ of our Father. Satan’s challenge to Jesus was not merely one of belligerence. It was meant to shake His confidence in the truth that Jesus was the Christ – the Son of God who came from God and was of the one being with Father.
I AM OF GOD
This is important because the imputation can be made within an Arian mode *of thought that Jesus as a created person complied with some law that was external to Himself. But He did not. As son of God and Son of Man He was being Himself. As I AM He was revealing our Father and revealing our best selves. So far from Jesus being an exponent of some lesser law of righteousness such as the Mosaic law or an exposition of the knowledge of good and evil, Jesus was both Himself as the Son and the Father revealed.
“The Son is then thought of as the Offspring of the Father by nature (φύσει), who is proper to, and identical with, the very being of God the Father, of one nature (ὁμοφυής) with the Father who begot him eternally in himself. He does not just partake of the Father, but is essentially and wholly one with the Father in being and reality. ‘The fullness of the Godhead is the being of the Son, and the Son is whole God.” (1)
Jesus is the manifestation of the Father. Not a manifestation of the law.
Of course Jesus is also fully us in that He is fully a human person. This is why Francois Du Toit can say, ‘To see Jesus is to see yourself.” You are who you are and you are coming into your glory by being you in relationship with Father as a son/daughter. Because you are in Jesus who is fellowship with Father you are in Him and with Him. Never an orphan and always a daughter or son.
Jesus was an apostle of His Father in that He represented and was ‘His being.’ Jesus was the Son and not the Father, yet of the same nature and essence. It is this image of God who is multiplied in us due to the coming of Christ into our flesh. Thus an apostle of the Kingdom is an apostle of the image of God multiplied in the sons of God. Jesus multiplies in is who Jesus is. A genuine apostle is never an apostle of the law or anything that is connected to the law of sin and death and the orphanhood of Adam.
* Arianism is a non-trinitarian concept of God that fits nicely with God defined as ‘law’ because a god who is unitary and contained in singleness is not a God of love because ‘love’ entails relationship with others. Arianism is a fellow traveller of legalism and separation.
(1) Torrance, Thomas F.. The Trinitarian Faith: The Evangelical Theology of the Ancient Catholic Church (T&T Clark Cornerstones) (p. 123). Bloomsbury Publishing. Kindle Edition.