Isn't it true that the only reason Adam & Eve died spiritually initially and ultimately physically, and all of their progeny die (except Jesus), is because "the wages of sin is death"? (and of course this involves original sin, guilt, and imputation of the sin of Adam). But Jesus was the only human being not tainted by original sin, original guilt, or the imputation of Adam's sin. And, Jesus was sinless, so since he never sinned then death via "the wages of sin is death" can't apply to Him. It seems it was not until the sins of the elect were imputed to Him on the Cross that He bore God's wrath upon sin for us & paid the infinite sin debt in a finite period of time & laid down His own life for us. Therefore, the human flesh that Jesus took upon Himself absolutely could not be killed and could not die ... until Jesus willed it.