'Request' in the Bible

At this, David got up from the ground, washed, anointed himself, changed his clothes, and went into the LORD's tent to worship. Then he went back to his palace where, at his request, they served him food and he ate.

At this, Joab fell on his face to the ground, prostrating himself to bless the king, and then said, "Today your servant realizes that he's found favor with you, your majesty, in that the king has acted on the request of his servant."

"Please," Zadok's son Ahimaaz continued, "No matter what happens, let me follow the Ethiopian!" Joab asked him, "Why this request to run, my son? There's no reward in it for you."