Thanks for that utterly useless information.
We're talking about PARABLES - not Fables.
According to Newadvent Catholic Encyclopedia - a "Parable" is defined as:
The word parable (Hebrew mashal; Syrian mathla, Greek parabole) signifies in general a comparison, or a parallel, by which one thing is used to illustrate another. It is a likeness taken from the sphere of real, or sensible, or earthly incidents, in order to convey an ideal, or spiritual, or heavenly meaning.
From the King James Bible Dictionary:
An utterance that involves a comparison.
From Smith's Bible Dictionary:
(The word parable is in Greek parable (parabole ) which signifies placing beside or together, a comparison, a parable is therefore literally a placing beside, a comparison, a similitude, an illustration of one subject by another. --McClintock and Strong. As used in the New Testament it had a very wide application, being applied sometimes to the shortest proverbs, (1 Samuel 10:12 ; 24:13 ; 2 Chronicles 7:20) sometimes to dark prophetic utterances, (Numbers 23:7 Numbers 23:18 ;24:3 ; Ezekiel 20:49) sometimes to enigmatic maxims, (Psalms 78:2 ; Proverbs 1:6) or metaphors expanded into a narrative. (Ezekiel 12:22)
The parable differs from the fable (1) in excluding brute and inanimate creatures passing out of the laws of their nature and speaking or acting like men; (2) in its higher ethical significance. It differs from the allegory in that the latter, with its direct personification of ideas or attributes, and the names which designate them, involves really no comparison. The virtues and vices of mankind appear as in a drama, in their own character and costume. The allegory is self-interpreting; the parable demands attention, insight, sometimes an actual explanation. It differs from a proverb in that it must include a similitude of some kind, while the proverb may assert, without a similitude, some wide generalization of experience.)
Parables convey TRUTH by comparison - NOT fantasy.
The Parable of the Sheep and the Goats compares what will happen to those who are obedient - as opposed to those who are disobedient. It shows that their salvation or damnation depends on it.