David, Saul, and the cave are in 1Samuel chapter 24 but there is no mention of a spider. From my experience, Christian preachers often enhance Bible stories with fictional details.

Ezekiel 4:12 God instructs Ezekeil to make a campfire with his own feces to bake some bread.

I thought that was Johnny Appleseed.

The most incredible thing about their planned national dominion, is the fact that most of us will not allow it to happen and I doubt they comprehend just how seriously this will not happen even if they become even more fascist and militant and organized than they already are, and they are.
We can't trust any political party that lies to us, Trump lied about kids being immune to the virus so open the damned schools, that's attempted mass murder.
You don't get to invoke a rule that the administration can't appoint a Supreme Court Judge in an election year and get everyone to agree, then appoint one during the election when it's your turn.
This illustrates the dishonesty, the self interest, the egotism and the craven hunger for power that has to be removed even if it involves grave sacrifice, they have defined themselves as our enemy, we didn't start this, but we will finish it.

He kissed the spider, according to the bible, your analogies are all whack, who in their right mind could say that the orange turd is an ungodly creature sent to help us? help us die and become a russian satellite does not qualify as help by the way.

That story is not Biblical, it is Midrash.
Also it is not complete, in the original young David questions god s to why he made Madmen, spiders and stinging wasps all thing David feels have no purpose and are at odd with the supposed wisdom of god.
God gets pissed off at David, calls him a cheeky bastard and promises that one day Daviy boy will see why Wasps, spiders and nut jobs are all proof of HIS divine wisdom.
Through various situations years later god arranges for David to be endangered and in fear of his life three times, the first time he escapes death by pretending to be mad, the second is the Spider story and the third is David gets stuck in Saul's tent while trying to rob the mad king Saul in his sleep and only gets away because the guard is stung by a wasp. Thus proving Spiders, wasps and loonies were created by god purely for the purpose of getting David out of sit com situations a few thousand years later that he god engineered in the first place and showing how "wise" the daft bugger was..

This is just a jewish tale talking about king david, kind of fan fiction as we would call it today.

As far as I remember, it's not in the bible.
By the way, Isrraeli archaeologists have said that there was no great kingdom of david.
He was merely a tribal chieftan whose life story was elaborated on.
See "David and Solomon" and "The Bible Unearthed" by Israel Finkelstein.

Evidently the story is in 1Samuel 22-24

If you have read the bible, Saul hated David, because David and Saul's son Jonathan had a romantic relationship. David was Bi. When he heard of Honathan's death David said his love for him was stonger than he felt for any woman.