John Gill Commentary 1 Samuel 25:4

"And David heard in the wilderness that Nabal was shearing his sheep." — 1 Samuel 25:4 (ASV)

And David heard in the wilderness
In the wilderness of Paran, where he was, and a wilderness it was to him, being in want of food, as the following relation shows:

that Nabal did shear his sheep ;
when there was generally good living, and so a proper person, and a proper time, for David to apply for the relief of his wants.