John 10:4-5, 16

When he has brought all his own sheep outside, he walks on ahead of them, and the sheep follow him because they know his voice and recognize his call. They will never follow a stranger, but will run away from him, because they do not know the voice of strangers.”

I have other sheep [beside these] that are not of this fold. I must bring those also, and they will listen to My voice and pay attention to My call, and they will become one flock with one Shepherd. [Ezek 34:23; Eph 2:13-18]