The truth is that all along the leaders of Israel had a quite overawing sense of the moral greatness of Yahweh and of the stringency of His demands upon them. "Be ye holy, for I am holy," was His demand; and so among this people, as among no other, the sense of sin was heightened, till it embittered life to all who seriously took to heart the religion they professed. This feeling sought relief in expiatory sacrifices, like the sin offering and the guilt offering; but in vain. It then led to Pharisaic hedging of the law, to seeking a positive precept for every moment of time, to binding upon men's consciences the most minute and burdensome prescriptions, as a means of making them what they must be if they were to meet the Divine requirements. But that too failed. It became a slavery so intolerable that, when St. Paul received the power of a new life, his predominant feeling was that for the first time he knew what liberty meant. He was set free from both the bondage of sin and the bondage of ritual.
To the religious man of the Old Testament life was a conflict against evil tendencies, a conflict in which defeat was only too frequent, but from which there was no discharge. It was fitting, therefore, that at the very beginning of Israel's history, as the people of God, this stern prohibition of the rougher manifestations of the natural man should stand.
But it is characteristic of the Old Testament that it states the fundamental fact, without any of the over-refinements and exaggerations by which later doctrinal developments have discredited it. There is no appearance here, or anywhere in the Old Testament, of the Lutheran exaggeration that man is by nature impotent to all good, as a stock or a stone is. Keeping close to the testimony of the universal conscience, the Decalogue, and the Old Testament generally, speaks to men as those who can be otherwise if they will. There is, further, a robust assertion of righteous intention and righteous act on the part of those whose minds are set to be faithful to God. This may have been partly due to a blunter feeling in regard to sin, and a less highly developed conscience, but it was mainly a healthy assertion of facts which ought not to be ignored. Yet, with all that, original sin was too plain a fact ever to be denied by the healthy-minded saints of the Old Testament. Fundamentally, they held that human nature needed to be restrained, its innate lawlessness needed to be curbed, before it could be made acceptable to God.
Among the heathen nations that was not so. Take the Greeks, for instance, as the highest among them. Their watchword in morals was not repression, but harmonious development. Every impulse of human nature was right, and had the protection of a deity peculiarly its own. Restraint, such as the Israelite felt to be his first need, would have been regarded as mutilation by the Greek, for he was dominated by no higher ideal than that of a fully developed man. There was no vision of unattainable holiness hovering always before his mind, as there was before the mind of the Israelite. God had not revealed Himself to him in power and unalloyed purity, with a background of infinite wisdom and omnipotence, so that unearthly love and goodness were seen to be guiding and ruling the world. As a consequence, the calling and destiny of man were conceived by the Greeks in a far less soaring fashion than by Israel. To put the difference in a few words, man, harmoniously developed in all his powers and passions and faculties, with nothing excessive about him, was made God by the Greeks; whereas in Israel God was brought down into human life to bear man's burden and to supply the strength needed that man might become like God in truth and mercy and purity. It is of course true that both conceived of God under human categories. They could not conceive God save by attributing to Him that which they looked upon as highest in man. It is also true that the higher natures in both nations, starting thus differently, did in much approach each other. Still, the immense difference remains, that the impulse in the one case was given from the earth by dreams of human perfection, in the other it came from above through men who had seen God. The Greeks had seen only the glory of man; Israel had seen the glory of God.