Would you let us know how biology can be altered in a way that would in-fact render humans immortal? No one is saying it can not be. I would just like to know.

Which part of what I posted had little to do with this string so that I may not repeat the same mistake.

Yes souls do exist:

When it was day, Friday morning, early, Jesus, after the prayer, assembled his disciples
and said to them: `Let us sit down; for even as on this day God created man of the clay of the earth, even so will I tell you what a thing is man, if God please.`

When all were seated, Jesus said again:
`Our God, to shew to his creatures his goodness and mercy and his omnipotence, with his liberality and justice, made a composition of four things contrary the one to the other, and united them [in one final object, which is man - and this is earth, air, water, and fire- in order that each one might temper its opposite. And he made of these four things a vessel, which is man`s body, of flesh, bones, blood, marrow, and skin, with nerves and veins, and with all his inward parts; wherein God placed the soul and the sense, as two hands of this life: giving for lodgement to the sense every part of the body, for it diffused itself there like oil. And to the soul gave he for
lodgement the heart, where united with the sense, it should rule the whole life.

`God, having thus created man, put into him a light which is called reason, which was to
unite the flesh, the sense, and the soul in a single end - to work for the service of God.

`Whereupon, he placing this work in paradise, and the reason being seduced of the sense by the operation of Statan, the flesh lost its rest, the sense lost the delight whereby it liveth, and the soul lost its beauty.

`Man having come to such a plight, the sense, which findeth not repose in labour, but seeketh [delight, not being curbed by reason, followeth the light which the eyes show it; whence, the eyes not being able to see aught but vanity, it deceiveth itself, and so, chosing carthly things, sinueth.

`Thus it is necessary that by the mercy of God man`s reason be enlightened afresh, to know good from evil and [to distinguish] the true delighted: knowing which, the sinner is converted to penitence. Wherefore I say unto you verily, that if God our Lord enlighten not the heart of man, the reasonings of men are of no avail.

John answered: `Then to what end serveth the speech of men?

Jesus replied: `Man as man availeth naught to convert man to penitence; but man as a means which God useth converteth man; so that seeing God worketh by a secret fashion in man for man`s salvation, one ought to listen to every man, in order that among all may be received him in whom God speaketh to us.`

James answered: `O Master, if perchance there shall come a false prophet and lying teacher pretending to instruct us, what ought we to do?

Jesus answered in parable: `A man goeth to fish with a net, and therein he catcheth many fishes, but are bad he throweth away.

`A man went forth to sow, but only the grain that falleth on good ground beareth seed.

`Even so ought ye to do, listening to all and receiving only the truth, seeing that the truth alone beareth fruit unto eternal life.`

Then answered Andrew: `Now how shall the truth be known?

Jasus answered: `Everything that conformeth to the book of Moses, that receive ye for true; seeing that God is one, the truth is one; whence it followeth that the doctrine is one and the meaning of the doctrine is one; and therefore the faith is one. Verily I say unto you that if the truth had not been erased from the book of Moses, God would not have given to David our father the senond. And if the book of David had not been contaminated, God would not have committed the Gospel to me; seeing that the Lord our God is
unchangeable, and hath spoken but one message to all men. Wherefore, when the messenger of God shall come, he shall come to cleanse away all wherewith the ungodly have contaminated my book`.

Then answered he who writeth: `O Master, what shall a man do when the law shall be found contaminated and the false prophet shall speak?`

Jesus answered: `Good is thy question, O Barnabas; wherefore I tell thee that in such a time few are saved, seeing that men do not consider their end, which is God. As God liveth in whose presence my soul standeth, every doctrine that shall turn man aside from his end, which is God, is most evil doctrine. Wherefore there are three things that thou shalt consider in doctrine - namely, love towards God, pity towards one`s neighbour, and hatred towards thyself, who hast offended God, and offendest him every day.

Wherefore every doctrine that is contrary to these three heads do thou avoid, because it is most evil.