I believe as far as doctrine goes, there is no command or insinuation to love other people in a sacrificial way, giving ones life for another.  There may be instances of this happening in the OT, but as a doctrine of teaching, it is not in the OT as a matter of developed doctrine.  Adam did not lay his life down to save Abel.  Moses ran away after defending one of his people.  Daniel, Shadrach, Meshach, and Abednego laid their life down for God, but not others.  You could make a case for Esther, but it is clearly not a consistent teaching in the OT.
In brotherhood,
John
		
		
	 
Read it again :  Greater  love hath no man than a man who lays down his life for a freind .
This is simply n a statement of fact  by the Lord and reflects or expresses a truth  that has been   recognised and known in all ages .
It is not stating  that Adam  or any one specific  is mentioned in scripture . Though with a good search you may well find  an example (?)  But in truth  in all wars   for instance  men have indeed have died to save  another . and by 'save'  I mean  that they  would continue to live and died so that they might . Even up to the present day and even by our enemies .
For instance  it cannot be said that the German army  did not fight without courage , skill and determination .It is certain  that as in our forces  indivisual soldiers  died to save thier comrades  from death. The great sadness was that they were fightign on the wrong side and for the wrong cause . But individuals  loved a freind so much that they were willing to die ;take  a bullet  or rescue  a wonded one but died as a result  etc were or could be found in the German army as the British one or others.
That is what  is meant by a man laying down his life for a freind .
But the Lord was using it as contrast  to the Love of God  in laying down his life for his enemy or for those who were at emnity with him.
While we were yet without strength , sinners etc.
"Here in is love ........." and God  commends his love towards us... "
 But then consider when the road to calvary actually started?
I would argue  that it started with the words "let there be light "
For  Jesus taight that no man starts to build a tower  without first considering  if he has the means  to build it or no man goes to war  unless he has the strength to do so .
Is it not written  that God knows the end form the begining?
He knew full well that "the  arm of flesh would  fail"
He knew full well the terrible consequences  that would fiollow and the end of it  when Adam did eat of that tree of the knowldge fo good and evil.
Not that God willed that he would  for ti was not the will of Godf that he should and expressed what HIS  eternal will was .  That "thou shalt  not eat of it......."
He gave man the perfect liberty  as sons of God (by creation)  to choose any good they thought to do or  find . "Of all the trees  in the garden ye may freely eat "This included the tree of life.
He gave them no liberty to eat or to do evil.
Thus he knew what it would cost to redeem man and to 'save' him.
Is it not written  that the first Adam "was a foreshadow  of him who was to come"?
Thus  in givign them a covering  for sin   or thier nakedness . he laid down  and prepared then and by the sacrafice of animals later  the truth that  there is no remission of sins  save by the sheddign of blood.  But also gave a promise that  the Son  born of a woman but not of Adams  seed would be the true lamb of God  that would  "take away the sin of the world" By bruisng the head of the serpent.
True  it is that it does not lay it all out in the beginning . Wisdom dictated it be so.
and words b y thier very nature can only be said one word at a time or by parts.
My contention then is that there is no sound doctrine  of scripture  that cannot be found in the first book the book of beginnings.
Wher eit si first mentioned .
The laws of Moses as to the sacrafice of animals  is therefore found ij the book of Genesis .
The lamb  sacraficed and the blood put on the doors lintels and frame of the house is also found in the same place  in its foundational  truth .
The innocent dying for the guilty   is also .
Thus  the Love of God  so "commended"and the mercy of God was first  manifested and expressed  in the garden of Eden .
For is it not written  "love covers a multitude of sins"?
and was  not the mercy of God  expresseed  when he first gave them a covering  of animal skins  and then the promise ?
Thus  Pauls exposition  in Hebrews  as to the temporary nature   of the animal sacrafices  can also be found  in the garden of Eden.
For if the  sacrafice  of an animal would have restored  them to thier  former estate why then the promise?
So I never said (in fact quite the opposite) that  all sound doctrines can be found in thier  as  a  matter "of developed doctrine"
What I said initialy was that  the Lord got his doctrine as did Paul FROM  the OT  and hat all the doctrines they taught  cant be found in the OT  .First as FOUNDATIONAL  truth  and develioped through out  the OT .
Or as Pauls  says  "God  who in sundry times and in divers WAYS  spoke  by the prophets ........"
 Who only spoke in PARTS .
"Hath in the last days spake by His Son"
What He spake by His Son neither contradicts   nor overtunes what he spake in times past .
Though Jesus  did not but carry the message  (as a Prophet)  he WAS  the message .
Thus what was first  spoken of in parts through out the Old Testament  was spoken perfectly  in the NEW.
Did  not the Lord himself "start at Moses"?   speaking  of all those things concerning himself  to the two   on the road to emaus .
Where is the Lord first mentioned?
I would argue  that   indirectly   with the verse that says  "The VOICE of the Lord God walked in the cool of the evening."
Some using other versions  would deny it.
be that as it may .
It is beyond all dispute  that the Lord is first mentioned  as the one  BORN  of a woman  but not of Adams seed .
Who would come  and bruise the head of the serpent which was fatal to it .
But in the proceess hsi heal woulod be bruised (not 'fatal' )
The book  of genesis is in very truth the book of beginnings  and what was sown  there whther  of the seed  of the woman or the seed  of the serpent  would as all seeds do  grow . From a two leafed  littel  upshoot .That  LOOKS  no different from each other .
But as they grow  one seed produces wheat  and another tares  a\nd so on .
The fruit  then or the fullment  of all that was started in the first book  then has its  end or can be found in the ;last book.
If you want to understand the last  book properly  then you needs must understand the first book.
For it by thier  fruits shall ye know them. and the fruit is determined by the seed that is sown .
Thus  God beign" a husbandman " knows the harvest  by the seed  that is sown.
Weeds grow quickly and farst. 
The good seed  needs both good "preperation  "  of the soil   and then fed and watered.
It took 4000 years   for God to prepare the soil.
So that the  earth could recieve   the seed  that would  then be sown  in it.
"Unless a seed  fall into the ground and die  it abideth alolne........................."
Jospeh  who was one   was 'sown'  in Egypt .
After 400 years  two and a hal;f  million  + came out .
Just a thought .
in Christ
gerald