'Flock' in the Bible

But the hired man [who merely serves for wages], who is neither the shepherd nor the owner of the sheep, when he sees the wolf coming, deserts the flock and runs away; and the wolf snatches the sheep and scatters them.

But I have other sheep that are not of this fold; I must bring them also, and they will listen to My voice. Then there will be one flock, one shepherd.