What scripture tells about David hiding in a cave from Saul and spider covers the entrance with web?

The scripture you are referring to can be found in 1 Samuel chapter 24, verses 1-15 of the Old Testament in the Bible. However, there isn't an account of a spider covering the entrance with its web. In this passage, King Saul is chasing after David, who is in hiding because Saul wants to kill him. David finds refuge in a cave, where Saul and his men enter to rest without realizing David's presence inside.