'Curse' in the Bible

Then said Abishai the son of Zeruiah unto the king, Why should this dead dog curse my lord the king? let me go over, I pray thee, and take off his head.

And the king said, What have I to do with you, ye sons of Zeruiah? so let him curse, because the LORD hath said unto him, Curse David. Who shall then say, Wherefore hast thou done so?

And David said to Abishai, and to all his servants, Behold, my son, which came forth of my bowels, seeketh my life: how much more now may this Benjamite do it? let him alone, and let him curse; for the LORD hath bidden him.

Perhaps the Lord will notice my affliction and this day grant me good in place of his curse."

The men of Israel replied to the men of Judah, "We have ten shares in the king, and we have a greater claim on David than you do! Why do you want to curse us? Weren't we the first to suggest bringing back our king?" But the comments of the men of Judah were more severe than those of the men of Israel.