'Couple' in the Bible

So Amnon lay down and pretended to be ill; when the king came to see him, Amnon said to the king, “Please let my sister Tamar come and make me a couple of cakes in my sight, that I may eat from her hand.”

Now when David had passed a little beyond the summit, behold, Ziba the servant of Mephibosheth met him with a couple of saddled donkeys, and on them were two hundred loaves of bread, a hundred clusters of raisins, a hundred summer fruits, and a jug of wine.

Thus says the Lord,“Just as the shepherd snatches from the lion’s mouth a couple of legs or a piece of an ear,So will the sons of Israel dwelling in Samaria be snatched away—With the corner of a bed and the cover of a couch!