and Adam, before SIN, was still flesh and blood like Jesus was after His Resurrection.The Bible specifically says that flesh and blood can not enter heaven. A glorified body is somehow different. Our flesh and blood body down here has been tainted with sin so it has to be changed into a heavenly body. It will be like Jesus resurrection body.
stop thinking Sin for the purpose of what this topic is about, the BODY, for a moment here.
had Adam not sinned, this Body would be allowable in Heaven [based upon being SINLESS].
Which means, Adam's flesh and blood would have been permitted to enter into Heaven had he not sinned.
So, Jesus' Own Body, being Flesh and Blood, would have been the perfect example of Adam, had Adam not sinned.