S.Lewis Johnson -- John 10:5

Now notice one other thing, they refused strangers. "And a stranger will they not follow." That is when we hear the voice of Paul Tillich we don't respond. I read the story of a man from Scotland. He must have been a shepherd. He was visiting Jerusalem and he was by the wall of the city of Jerusalem and he saw a shepherd coming with his sheep. He thought he would ask the shepherd if he would engage in a little bit of an experiment. He approached the shepherd, he said, "Would you do this as an experiment?" Would you change clothes with me and then let me call the sheep?" And so the shepherd agreed to do it. They changed cloths, and then he came out, and he called the sheep. The sheep didn't come. And then the true shepherd in the clothes of the Scottish traveler called the sheep and they came to him.

Now, we read here, a stranger will they not follow. So when Paul Tillich calls out we don't respond. When Moltmann calls out we don't respond. When Bultmann calls out we don't respond. When William Barclay calls out we don't respond. When Wolfhart Pannenberg calls out we don't respond. When Gerhart von Rott, we don't respond. When Eichrot, Jako, Kumal, all the great scholars of the present day who are not members of the body so far as we can tell, when they call out as shepherds of the sheep, the true sheep do not respond. They do not follow the voice of a stranger.
Now that is a problem for me, because there are some people who do not seem to be able to distinguish the voice of our Lord from the voice of strangers. Isn't it a remarkable thing? You probably know some Christians, professing Christians like that. They hear something and they immediately run after it as if it were something great until they discover that's not quite as great as it was, and they come back. And then a new voice is heard and they rush after them. That makes me wonder, because the true sheep do not follow the voice of a stranger. They don't run after Mary Baker Glover Patterson Eddy. They don't run after Ellen G. White. They don't run after Rutherford. They don't run after the false voices, they follow our Lord Jesus Christ. They hear his voice. They know him. They follow him. That should be a word of admonitions to us.