The conflict in Abraham's soul had a still more painful aspect in that it seemed to rend his very religion into two. Faith in the promise on which he had been living all his life drew one way; faith in the later command, another. God seemed to be against God, faith against faith, promise against command. If he obeys now, what is to become of the hopes that had shone for years before him? His whole career will be rendered nugatory, and with his own hand he will crush to powder his life's work. That wonderful short dialogue which broke the stern silence of the journey seems to throw light on his mood. There is nothing in literature sacred or secular, fact or fiction, poetry or prose, more touching than the innocent curiosity of Isaac's boyish question, and the yearning self-restraint of the father's desperate and yet calm answer. But its value is not only in its pathos. It seems to show that, though he knew not how, still he held by the hope that somehow God would not forget His promise. Out of his very despair, his faith struck, out of the flint of the hard command, a little spark which served to give some flicker of light amid the darkness. His answer to his boy does not make his sacrifice less, but his faith more. The writer of the Epistle to the Hebrews gives a somewhat different turn to his hopes, when he tells us that he offered up the heir of the promises, 'accounting that God was able to raise him from the dead.' Both ways of clinging to the early promise, even while obeying the later command, seem to have passed through his mind. The wavering from the one to the other is natural. He is sure that God had not lied before, and means what He commands now. He is sure that there is some point of reconciliation--perhaps this, perhaps that, but certainly somewhat. So he goes straight on the road marked for him, quite sure that it will not end in a blind alley, from which there is no exit. That is the very climax of faith--to trust God so absolutely, even when His ways seem contradictory, as to be more willing to believe apparent impossibilities than to doubt Him, and to be therefore ready for the hardest trial of obedience. We, too, have sometimes to take courses which seem to annihilate the hope and aims of a life. The lesson for us is to go straight on the path of clear duty wherever it leads. If it seem to bring us up to inaccessible cliffs, we may be sure that when we get there we shall find some ledge, though it may be no broader than a chamois could tread, which will suffice for a path. If it seem to bring us to a deep and bridgeless stream, we shall find a ford when we get to the water's edge. If the mountains seem to draw together and bar a passage, we shall find, when we reach them, that they open out; though it may be no wider than a cañon, still the stream can get through, and our boat with it.