'What's' in the Bible

So Joab approached the king and asked him, "What have you done? Look, Abner came to you! What's this? You sent him away? He's long gone now!

His staff asked him, "What's this about? When the child was alive, you fasted and cried. Now that the child has died, you get up and eat!"

But now that he has died, what's the point of fasting? Can I bring him back again? I'll be going to be with him, but he won't be returning to me."

The king asked her, "What's your problem?"

In answer to Joab, Absalom replied, "Look, I sent for you, telling you "Come here so I can send you to the king to ask him "What's the point in moving here from Geshur? I would have been better off to have remained there!"' So let me see the king's face, and if I'm guilty of anything, let him execute me!"

So Absalom asked Ahithophel, "What's your advice? What should we do?"

So King David sent this message to Zadok and Abiathar, the priests: "Ask the elders of Judah, "Why are you the last to bring the king back to his palace, considering that what's being reported throughout all of Israel has come to the king at his palace?

In response, the king told him, "What's the point of us talking anymore? My decision is that you and Ziba divide the fields."