Thus and doubtless henceforth, development of the life’s phenomenon presupposes partial mastery of the death and its use.

Let's insist more.
Of course, death of cells can result of important variations of the physical balances of the environment or biophysical of the body , but also, according to recent works, on account of abnormal oscillations of these balances,
what implies, there too, evidently :
-  the perception of these variations and oscillations,
-  the interpretation of these perceptions by means of value’s references (of antonyms),
- the elaboration and diffusion of processes organizations with deadly effects by means of the electromagnetic waves which are the primordial vectors of the sense.

So, it’s reasonable to think that some beings have an immunizing system which enables elaboration of processes organizations with deadly effects, and it, by referring to lived experiences memorized to genetic level.
You noted it, we speak about immunizing system which enables elaboration of processes organizations … and not of  immunizing system which does it, for not to ignore creative entity of transcendent order, master of the "sense", who conceives them and uses them.

These deadly processes organizations therefore enable cells’s elimination which cannot any more play their part or which are not sufficiently efficient ; it's the same for majority of the cells which escape accidentally from organ to which they belong or which acquired too much independence.

Let's consider besides, the beings as the vegetables which have not an immunizing system as the ours, or as that of the mammals, birds and fishes,
in particular, which have not T-lymphocytes, these protective cells, fruits of ceaseless researchs for immunization which exist since only 400 million years.

When vegetables are "attacked", some characters of their aggressors (the signatures of the viruses, bacteria and parasites as biologists say ), are recognized and compared with these of lived experiences memorized at the genetic level,
then several strategies are elaborated and used, notably the one which enables the premature annihilation of infected cells, even, of cells which can be infected (it's a firebreak strategy ).

So, "decision" to sacrifice healthy cells, to pursue individual’s development and the species’s perpetuation, obviously shows that process of cells destruction (killing) by means of specific "orders" with deadly effects, is sometimes a vital process, an imperative process.

Ageing's phenomenon is also, rich in information.
For example, the ageing shows that it is impossible to do to infinity and exactly, copies of the genetic information when there is cells's renewal (when there is DNA's replication).
It is therefore an universal and inexorable constraint which leads to progressive loss of control of the genetic heritage.
This constraint has been moreover, to origin of the male cells and female cells.
Indeed, there is a long time, of the cells have not been able to contain all genetic information and the processes organizations which was necessary for pursuing their complexification, and thus, were divided into halves.

Death and the ageing thus express the sacrificial character of the universal dynamics ; of this fact they cannot be transgressed, and if it was not as this the world would be "petrified" for ever.

Besides, knowing that we evolve (that we are) in a cyber-world which is managed by a creative entity of transcendent order,
a divine entity who nevertheless needs very complex centers (poles) for her processes organizations and information,
we consider that the life’s phenomenon and naturally the human being are an universal necessity.

But according to us, man is not "prisoner" of a process as some people say ; he plays, by a divine delegation of powers and paradoxically without really knowing, an essential part in universal dynamics,
an understanding which we express gladly by the interrogation :
is not the man a divine necessity rather than a God's specific project on earth ?,
a very remote understanding from current exegesises of the biblical tradition :

"From any tree of the garden you may eat freely; but from the tree of the knowledge of good and evil you shall not eat, for in the day that you eat from it you will surely die.” (Cf. Genesis 2, 16 – 17).

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So, if there is a post-mortem life, we believe it, this one can be only of spiritual order, of transcendent order, in one beyond the sensible reality (in one beyond the space).
That is why life after the death implies not at all the body's presence,
post-mortem life does not presuppose the resurrection.

Historical abstract.

Presentiment of a life after death is probably also ancient that the notion of beyond.
It is very difficult from dating their origin because the "expressions" of these presentiments, by behaviors and religious rites, have evolved during millenniums,
and according to the enrichment of the man's abstraction domain (of the man's psyche).

Significant rite giving evidence of a post-mortem life belief has been, without any doubt, the mummification.
If we consider the "mummy" of a black young child, discovered in South Libyan, this preparation of bodies has been practised by Saharan tribes, about 5.500 years ago.
However, it's in ancient Egypt that it "bloomed",
country where death was recognized as a ford which enables from reaching a singular life, with a condition however : to preserve, to the best, body,
country where death was even sometimes imagined as a creative god :

"Funeral papyrus of a priestess of Amon of XXI th Dynasty contains numerous interesting scenes ; one of these is relatively exceptional ; on a bottom of stars, there is a snake with wings, two pairs of legs, his body is ending by a bearded human head, and on the other side, by a jackal head. A legend says to us :
it is death, the great god who created the gods and men." (Cf. The Gods of Egypt - E. Hornung).
But in these time, was the egyptians believing to resurrection ? !

Actually belief to deaths’s resurrection came later ; with the Jews, about 160 years before J.C..
after a God intervention ?, Himself ?
Certainly no.

Let us dare to say it and repeat it,
revealed truths were not said by God Himself, but by divine entity who animates all men and who expressed Herself by mouth of charismatic and interrogative persons.
Moreover, impartially, most of these truths are "epoch truths" which have enabled to writers of the Bible (in particular to Josias) to promote the first social rules and theological rules destined to some semitic tribes (groups of nomads).

Belief that we can resurrect, has been thus, expression of new logics according to which divine rewards, necessarily, must include body's enjoyments (nowadays, this remark is valid for majority of the monotheists).

For the Moslems, impressed by the biblical tradition, resurrection is sometimes a new creation :
"And if thou wonderest, then wondrous is their saying : When we are dust , are we then forsooth ( to be raised ) in a new creation ? ..."(Cf. Koran – surat XIII, 5),

a new creation which enable from living eternally, a gilded existence :

"And give glad tidings ( O Muhammad ) unto those who believe and do good works ; that theirs are Gardens underneath which rivers flow ; as often as they are regaled with food of the fruit thereof , they say : This is what was given us aforetime ; and it is given to them in resemblance . There for them are pure companions ; there for ever they abide ..." (Cf. Koran - surat II, 25),

"In gardens of delight ; a multitude of those of old and a few of those of later time. On lined couches ; reclining therein face to face ; there wait on them immortal youths ; with bowls and ewers and a cup from a pure spring ; wherefrom they get no aching of the head nor any madness, and fruit that they prefer, and flesh of fowls that they desire. And (there are) fair ones with wide, lovely eyes ; llke unto hidden pearls …" (Cf. Koran - surats XXXXXVI, 12 to 23).

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