Christians have always maintained that Jesus was BOTH Man and God..... not one or the other. This is because that Jesus at times spoke as a man and at other times as God.
The notion that man is only a body is largely a modern convention that of the 17th - 19th centuries known as Materialism. Bible writers assume that reader understands that man is a tri-partite being with a spirit, a body, and a soul - all three of which are YOU ... indivduall or collectively. All three denote personhood in the bible. For example:
Job 32:8 But there is a spirit in man: and the inspiration of the Almighty giveth them understanding.
Isa 26:9 With my soul have I desired thee in the night; yea, with my spirit within me will I seek thee early:
1Co_5:3 For I verily, as absent in body, but present in spirit, have judged already, as though I were present, concerning him that hath so done this deed,
1Co_5:5 To deliver such an one unto Satan for the destruction of the flesh, that the spirit may be saved in the day of the Lord Jesus.
1Co_14:14 For if I pray in an unknown tongue, my spirit prayeth, but my understanding is unfruitful.
Rev. 6: 9 And when he had opened the fifth seal, I saw under the altar the souls of them that were slain for the word of God, and for the testimony which they held
Notice all the personal pronouns ascribing personhood to the spirit and soul!
That's because man is a tri-partite being and bible writers assumed everyone knows this.... which they did until recent centurires:
1 Thessalonians 5:23 - And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ.
Hebrews 4:12 - For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.
When I study the bible with former JW's, I don't even discuss the topic of Trinity. Instead, I try to get them to adopt a biblical view of our construction and leave the carefully chosen WT materialistic adaptations. If a person rejects materialism, then they have ususlly have no trouble viewing Jesus as both God and man, since his spirit is the essence of God, not his soul or body.
This perfectly explains how Jesus could say that the father was greater than him and at the same time declare that he posessed all power in heaven and earth.
In my opinion, any discussion that denies the nature of man FIRST, is a waste of time in discussing the nature of Jesus.
BTW, over 400 times in the OT the prophets declared, "thus saith the Lord". This phrase does not appear in the NT. But, 135 times Jesus said, "I say unto you". Interesting isn't it?