About the part of watching the humanity,in Greek mythology, there are the daimones, described by Hesiod as spirits placed by Zeus to watch over mortals, observing their acts and judgments, the daimones themselves were originally the first generation of mortal men, who lived in the golden age, and were transformed into daimones after their deaths
These passages are taken from the Theoi website:
Hesiod, Works & Days 109 ff (trans. Evelyn-White) (Greek epic C8th or C7th B.C.) :
"First of all the deathless gods who dwell on Olympos made a Golden
(khryseoi) Race of mortal men who lived in the time of Kronos (Cronus)
when he was reigning in heaven. And they lived like gods without
sorrow of heart, remote and free from toil and grief: miserable age
rested not on them; but with legs and arms never failing they made
merry with feasting beyond the reach of all evils. When they died, it
was as though they were overcome with sleep, and they had all good
things; for the fruitful earth unforced bare them fruit abundantly and
without stint. They dwelt in ease and peace upon their lands with many
good things, rich in flocks and loved by the blessed gods. But after
earth had covered this generation--they are called Pure Spirits
(daimones hagnoi) dwelling on the earth (epikhthonioi), and are
kindly, delivering from harm, and guardians of mortal men; for they
roam everywhere over the earth, clothed in mist and keep watch on
judgements and cruel deeds, givers of wealth [i.e. agricultural
bounty]; for this royal right also they received."
Hesiod, Works & Days 238 ff :
"For those who practise violence and cruel deeds far-seeing Zeus, the
son of Kronos (Cronus), ordains a punishment. Often even a whole city
suffers for a bad man who sins and devises presumptuous deeds, and
[Zeus] the son of Kronos lays great trouble upon the people, famine
and plague together, so that the men perish away, and their women do
not bear children, and their houses become few, through the contriving
of Zeus Olympios (Olympian). And again, at another time, the son of
Kronos either destroys their wide army, or their walls, or else makes
an end of their ships on the sea. You princes, mark well this
punishment you also; for the deathless gods are near among men and
mark all those who oppress their fellows with crooked judgements, and
reck not the anger of the gods. For upon the bounteous earth Zeus has
thrice ten thousand Spirits (daimones), Watchers of mortal men, and
these keep watch on judgements and deeds of wrong as they roam,
clothed in mist, all over the earth."
On the part of teaching humans, Prometheus was responsible for giving them the fire, and other gods are also described as teaching certain practices, Hephaestus and Athena are described as having taught humans how to build houses, as well as smithing and weaving, while Demeter is regarded as the one who taught agriculture to mortals, among others.
