1 Samuel 23:15

And David saw that Saul was come out to seek his life: and David was in the wilderness of Ziph in a wood.

Cross-reference

1 Samuel 23:3 records David's men's fear earlier in the same chapter, setting up the danger that David now recognizes personally.

Hebrews 11:38 lists the faithful who wandered in deserts — David's wilderness flight is a direct example of this.