Nabal in Wikipedia
According to the 1st Book of Samuel Chapter 25, Nabal (נבל),
was a rich Calebite[1] who was also described as being harsh
and surly. David (who was not yet king) and his band of men
who had been outlawed by King Saul were living off the
Wilderness of Paran and providing voluntary protection to
the shepherds in the area.[2]
The account states that Nabal lived in the city of Maon, and
owned much land in the Judean town of Carmel, as well as
many sheep and goats;[3] the events it reports are stated as
happening at the time of sheep shearing,[4] which in
Israelite culture was a time for great festivities, owing to
the importance of the wool trade.[5] During this time David
sent a small group of men to Nabal with a request for what
provisions were readily at hand. David told his men exactly
what to say when they approached Nabal. The words David used
were a reminder that Nabal's profit would not have been so
great if his shepherds had not been protected. In addition,
David extends a great deal of honor to Nabal, recognizing
him as a nobleman of high stature. Nabal, who knew who David
was, responded by questioning David's lineage and insulting
his men. David took the insults personally and decided to do
something about it...
Read More about Nabal in Wikipedia