This is a remarkable passage; for we are taught here that we are not to deal with God in too limited a manner, but room must be given for hope; for the Lord does not immediately execute what he declares by his mouth; but his purpose is to prove our patience, and the obedience of our faith. Hence he says, the vision, is for a time, and a fixed time: for מועד, muod means a time which has been determined by agreement. But as it is God who fore appoints the time, the constituted time, of which the Prophet speaks, depends on his will and power. The vision, then, shall be for a time. He reproves here that immoderate ardor which takes hold on us, when we are anxious that God should immediately accomplish what he promises. The Prophet then shows that God so speaks as to be at liberty to defer the execution of his promise until it seems good to him.