There is a lesson to be learned for a great many, who don't even think God is there. They think of themselves as so wise and so superior to 'primitive superstition' that it is all nonsense, and inscrutable to their supposed 'intelligence' and 'knowledge'.
It is self-righteous folks such as this that Jesus was expressly not interested in saving--when he talked about healing the sick, and not the 'healthy'. These 'healthy' folks would not accept any such healing... nor was he inclined to cut them any slack if their hearts were not truly seeking. Hence he taught in parables:
As in Matthew 13:
"And the disciples came, and said unto him, Why speakest thou unto them in parables? 11. He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given. 12. For whosoever hath, to him shall be given, and he shall have more abundance: but whosoever hath not, from him shall be taken away even that he hath. 13. Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand. 14. And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive: 15. For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.
And as for teaching from disaster, the bible is replete with such, from the eating of the apple in the Garden of Eden, with the following eviction of Man from the Garden, and being barred from the Tree of Life, the Great Flood and Noah's Ark, to Pharaoh, and so on, up to the great and minor recorded prophets included therein. Just as TruthandLife describes with Isaiah. And the use did NOT stop in the Old Testament if you think there is some sort of disconnect between the New Testament and Old. Jesus himself pointed to disasters, as in Luke 13:3-5
I tell you, Nay: but, except ye repent, ye shall all likewise perish. 4. Or those eighteen, upon whom the tower in Siloam fell, and slew them, think ye that they were sinners above all men that dwelt in Jerusalem? 5. I tell you, Nay: but, except ye repent, ye shall all likewise perish.
I.e., we will ALL die, someday, and the lesson is, that death will be permanent, without salvation, unless we repent.
So Jesus was not interested in reaching those who did not accept his word.... Only those who already accepted it.
Yeah, that makes a lot of sense...