The vagueness of the command is significant. Abram did not know 'whither he went.' He is not told that Canaan is the land, till he has reached Canaan. A true obedience is content to have orders enough for present duty. Ships are sometimes sent out with sealed instructions, to be opened when they reach latitude and longitude so-and-so. That is how we are all sent out. Our knowledge goes no farther ahead than is needful to guide our next step. If we 'go out' as He bids us, He will show us what to do next. 'I do not ask to see The distant scene; one step enough for me.' Observe the promise. We may notice that it needed a soul raised above the merely temporal to care much for such promises. They would have been but thin diet for earthly appetites. 'A great nation'; a divine blessing; to be a source of blessing to the whole world, and a touchstone by their conduct to which men would be blessed or cursed;--what was there in these to fascinate a man, unless he had faith to teach him the relative importance of the earthly and the heavenly, the present and the future? Notice that the whole promise appeals to unselfish desires. It is always, in some measure, elevating to live for a future, rather than a present, good; but if it be only the same kind of good as the present would yield, it is a poor affair. The only really ennobling faith is one which sets before itself a future full of divine blessing, and of diffusion of that blessing through us, and which therefore scorns delights, and for such gifts is content to be solitary and a wanderer. 2. The obedience of faith.--We have here a wonderful example of prompt, unquestioning obedience to a bare word. We do not know how the divine command was conveyed to Abram. We simply read, 'The Lord said'; and if we contrast this with verse 7, 'The Lord appeared ... and said,' it will seem probable that there was no outward sign of the divine will. The patriarch knew that he was following a divine command, and not his own purpose; but there seems to have been no appeal to sense to authenticate the inward voice. He stands, then, on a high level, setting the example of faith as unconditional acceptance of, and obedience to, God's bare word. Observe that faith, which is the reliance on a person, and therefore trust in his word, passes into both forms of confidence in that word as promise, and obedience to that word as command. We cannot cut faith in halves, and exercise the one aspect without the other. Some people's faith says that it delights in God's promises, but it does not delight in His commandments. That is no faith at all. Whoever takes God at His word, will take all His words. There is no faith without obedience; there is no obedience without faith.