Adam Clarke on 2 Samuel 2:1

David inquired of the Lord - By means of Abiathar the priest; for he did not know whether the different tribes were willing to receive him, though he was fully persuaded that God had appointed him king over Israel.

Unto Hebron - The metropolis of the tribe of Judah, one of the richest regions in Judea. The mountains of Hebron were famed for fruits, herbage, and honey; and many parts were well adapted for vines, olives, and different kinds of grain, abounding in springs of excellent water, as the most accurate travelers have asserted.