'Single' in the Bible

So the diseased men got up at twilight to go to the Arameans’ camp. When they came to the camp’s edge, they discovered that there was not a single man there,

Keep this in mind not a single statement by the LORD will fail to come about that he spoke concerning Ahab's dynasty, because the LORD has accomplished what he predicted by his servant Elijah."

And so they proclaimed it. Jehu sent the proclamation throughout Israel, and all the Baal worshipers came. There wasn't a single man left who failed to come. When they entered Baal's temple, it was filled from one end to the other.

How then can you drive back a single officer among the least of my master’s servants and trust in Egypt for chariots and for horsemen?