annsni said:Not to mention that God limited the lifespan of man in Genesis 6:3 and we can see that 120 is pretty much the limit on how long man can live even someone in the best of health.
That is Old Covenant. In the New Covenant more is granted.
26 And whosoever liveth and believeth in me SHALL NEVER DIE. Believest thou this?
40 Jesus saith unto her, Said I not unto thee, that, if thou wouldest believe, thou shouldest see the glory of God?
22 Jesus saith unto him, IF I WILL THAT HE TARRY till I come, what is that to thee? follow thou me.
23 Then went this saying abroad among the brethren, that that disciple should not die: yet Jesus said not unto him, He shall not die; but, IF I WILL THAT HE TARRY till I come, what is that to thee?
Those words of Jesus indicate that in the New Covenant, if a Christian really believes he won't die, then he won't. Also it is possible for a man to live from the first century until Jesus comes back, if He wills Him to.