The main thing here is belief in the diety of Christ. This has been covered many times before.
Mormons and JWs simply believe jesus is "a (small g) god".
; are specifically about Christ's resurrection.
Obviously everyone has a body when they are born. (flesh) and everyone has a spirit (soul) once they are born. ( ; )
Now everyone's body dies and everyone's soul is eternal. Only Jesus returned after death in the flesh.
; But Thomas, one of the twelve, called Didymus, was not with them when Jesus came.
; So the other disciples were saying to him, “We have seen the Lord!” But he said to them, “Unless I see in His hands the imprint of the nails, and put my finger into the place of the nails, and put my hand into His side, I will not believe.”
; After eight days His disciples were again inside, and Thomas with them. Jesus *came, the doors having been shut, and stood in their midst and said, “Peace be with you.”
; Then He *said to Thomas, “Reach here with your finger, and see My hands; and reach here your hand and put it into My side; and do not be unbelieving, but believing.”
; Thomas answered and said to Him, “My Lord and my God!”
Jesus *said to him, “Because you have seen Me, have you believed? Blessed are they who did not see, and yet believed.”
; See My hands and My feet, that it is I Myself; touch Me and see, for a spirit does not have flesh and bones as you see that I have.”