I thought I'd share this from my church membership class booklet on WCF 4:2:
God’s image is man and woman in their souls: knowledge, righteousness, and true holiness. Man’s body is just a house. Thomas Watson writes, “The soul of man. This is the man of man.” (Watson, Body of Divinity, 115.) Man is not made in the image of God; He IS God's image [see Gordon H. Clark]. “Reasonable” = rational. “Immortal” = will always exist somewhere ...
See also 2 Cor. 5 (body a house) and 2 Cor. 12:2ff (the "he" and "man" going to the highest heaven was the person with or without the body. (Insights also from Gordon H. Clark).
Watson also writes elsewhere, “The body is but a sheath; the soul is the princely part of man, which sways the scepter of reason …” The Ten Commandments (London: Banner of Truth Trust, 1965), 19.
J. Gresham Machen, in The Christian View of Man (ch. 12, “God’s Image in Man”), writes: “It was I many years ago, and it is the same I today, and it will be the same I to all eternity. That is what the Bible means when it tells me that I have a soul … The ‘image of God’ cannot well refer to man’s body, because God is a spirit; it must therefore refer to man’s soul. It is man’s soul which is made in the image or likeness of God.”
This is not to say that man does not exist as a psycho-somatic unity in this life and at the Resurrection, nor that the body is unimportant: on the contrary, the resurrection is insisted upon in 1 Cor. 15 as fundamental to our faith not being in vain. And Christ continues to have a body as well as a human soul as our Mediator. We are not teaching Gnosticism.
Illustrating another issue, B.B. Warfield in his, “The First Question of the Shorter Catechism”, quotes numerous influential or contemporary catechisms constantly using phrases like, “Since thou art a rational creature, that is to say, a human being”, equating humanity to rationality as a given. Such an elementary understanding of humanity is so buffeted today it is deemed worth noting here. (The Westminster Assembly And Its Work, 385-388.)