Our best way of knowing ourselves is to observe our own conduct, especially when it is hard to do nobly. We may easily cheat ourselves about what is the basis and ruling motive of our lives, but our actions will show it us. God does not 'test' us as if He did not know what was gold and what base metal, but the proving is meant to make clear to others and ourselves what is the worth and strength of our religion. The test is also a means of increasing the faith which it demonstrates, so that the exhortation to 'count it all joy' to have faith tried is no overstrained counsel of perfection. The narrative plainly declares that the command to sacrifice his son was to Abraham unmistakably divine. The explanation that Abraham, living beside peoples who practised child-sacrifice, heard but the voice of his own conscience asking, 'Canst thou do for Jehovah what these do for Moloch?' does not correspond to the record. No doubt God does speak through conscience; but what sent Abraham on his terrible journey was a command which he knew did not spring up within, but came to him from above. We may believe or disbelieve the possibility or the actuality of such direct and distinguishable commands from God, but we do not face the facts of this narrative unless we recognise that it asserts that God made His will known to Abraham, and that Abraham knew that it was God's will, not his own thought. But is it conceivable that God should ever bid a man commit a crime? To the question put in that bald way, of course there can be but one answer, No. But several conditions have to be taken into account. First, it is conceivable that God should test a man's willingness to surrender what is most precious to him, and what all his hopes are fixed on; and this command was given with the purpose that it should not be obeyed in fact, if the willingness to obey it was proved. Again, the stage of development of the moral sense at which Abraham stood has to be remembered. The child-sacrifices around him were not regarded as crimes, but as worship, and, while his affections were the same as ours, and his father's heart was wrung, to slay Isaac did not present itself to him as a crime in the way in which it does so to us. God deals with men on the moral and spiritual level to which they have attained, and, by descending to it, raises them higher.