'Couple' in the Bible

Now just as David happened to have passed the summit of the Mount of Olives, suddenly Mephibosheth's servant Ziba met him, accompanied by a couple of saddled donkeys loaded with 200 loaves of bread, 100 clusters of raisins, 100 pieces of summer fruit, and a skin of wine!

As a result, the merchants and sellers of all sorts of goods remained outside Jerusalem a couple of times.

"Will a couple walk in unity without having met?