"Arise, go to Nineveh, that great city, and preach against it, for their wickedness has come up before me."
We now then understand why Nineveh was calleda great city: for had it not been for the reason just stated, it would not have been necessary that this should have been said to Jonah. The Israelites, I doubt not, knew well that it was a large city, and also possessed of strength and of a large number of men: but the Lord intended to set before his servant what might have been a hindrance to him in the discharge of his office; Go then to this great city. In short, God designed in this way to try Jonah, whether he would prefer his command to all the hindrances of this world. And it is a genuine proof of obedience when we simply obey God, however numerous the obstacles which may meet us and may be suggested to our minds, and though no escape may appear to us; yea, when we follow God, as it were with closed eyes, wherever he may lead us, and doubt not but that he will add strength to us, and stretch forth also his hand, whenever need may require, to remove all our difficulties. It was then the Lord’s purpose to deal thus with Jonah; as though he had said to him, “remember who I am, and be content with my authority; for I have ready at hand all resources; when any thing stands in your way, rely on my power, and execute what I command thee.” This is the import of the passage. Whenever then God demands any service from us, and we at the same time see that what the discharge of our duty demands is either difficult or apparently impossible, let this come to our minds, — that there is not anything in the whole world which ought not to give way to God’s command: we shall then gather courage and confidence, nor will anything be able to call us away from our duty and a right course, though the whole world were fighting against God. 