In general, we may say, then, that the central thought which binds this group of precepts together, is the obligation, not merely to abstain from everything directly idolatrous, but also from all such customs as are, in fact, rooted in or closely associated with idolatry. On the same principle, the Christian is to beware of all fashions and practices, even though they may be in themselves indifferent, which yet, as a matter of fact, are specially characteristic of the worldly and ungodly element in society. The principle assumed in these prohibitions thus imposes upon all who would be holy to the Lord, in all ages, a firm restriction. The thoughtless desire of many, at any risk, to be "in the fashion," must be unwaveringly denied. The reason which is so often given by professing Christians for indulgence in such cases, that "all the world does so," may often be the strongest possible reason for declining to follow the fashion. No servant of God should ever be seen in any part of the livery of Satan's servants. That God does not think these "little things" always of trifling consequence, we are reminded by the repetition here, for the tenth time in this chapter, of the words, "I am the Lord!"
Next (ver. 29) follows the prohibition of the horrible custom, still practised among heathen peoples, of the prostitution of a daughter by a parent. It is here enforced by the consideration of the public weal: "lest the land fall to whoredom, and the land become full of wickedness." Assuredly, that a land in which such harlotry as this, in which all the most sacred relations of life are trampled in the mire, would be nothing less than a land full of wickedness, is so evident as to require no comment.
Herewith now begins the fourth and last division of this chapter (vv. 30-37), with a repetition of the injunction to keep the Sabbaths of the Lord, and reverence His sanctuary. The emphasis on this command, shown by its repetition in this chapter, and the very prominent place which it occupies both in the law and the prophets, certainly suggests that in the mind of God, reverence for the Sabbath and for the place where God is worshipped, has much to do with the promotion of holiness of life, and the maintenance of a high degree of domestic and social morality. Nor is it difficult to see why this should be so. For however the day of holy rest may be kept, and the place of Divine worship be regarded with only an outward reverence by many, yet the fact cannot be disputed, that the observance of a weekly sabbatic rest from ordinary secular occupations, and the maintenance of a spirit of reverence for sacred places or for sacred times, has, and must have, a certain and most happy tendency to keep the God of the Sabbath and the God of the sanctuary before the mind of men, and thus imposes an effective check upon unrestrained godlessness and reckless excesses of iniquity. The diverse condition of things in various parts of modern Christendom, as related to the more or less careful observance of the weekly religious rest, is full of both instruction and warning to any candid mind upon this subject. There is no restraint on immorality like the frequent remembrance of God and the spirit of reverence for Him.
Verse 31 prohibits all inquiring of them that "have familiar spirits," and of "wizards," who pretend to make revelations through the help of supernatural powers. According to 1 Sam. xxviii. 7-11, and Isa. viii. 19, the "familiar spirit" is a supposed spirit of a dead man, from whom one professes to be able to give communications to the living. This pretended commerce with the spirits of the dead has been common enough in heathenism always, and it is not strange to find it mentioned here, when Israel was to be in so intimate relations with heathen peoples. But it is truly most extraordinary that in Christian lands, as especially in the United States of America, and that in the full light, religious and intellectual, of the last half of the nineteenth century, such a prohibition should be fully as pertinent as in Israel! For no words could more precisely describe the pretensions of the so-called modern spiritualism, which within the last half century has led away hundreds of thousands of deluded souls, and those, in many cases, not from the ignorant and degraded, but from circles which boast of more than average culture and intellectual enlightenment. And inasmuch as experience sadly shows that even those who profess to be disciples of Christ are in danger of being led away by our modern wizards and traffickers with familiar spirits, it is by no means unnecessary to observe that there is not the slightest reason to believe that this which was rigidly forbidden by God in the fifteenth century B.C., can now be well-pleasing to Him in the nineteenth century A.D. And those who have most carefully watched the moral developments of this latter-day delusion, will most appreciate the added phrase which speaks of this as "defiling" a man.
Verse 32 enjoins reverence for the aged, and closely connects it with the fear of God. "Thou shalt rise up before the hoary head, and honour the face of the old man, and thou shalt fear thy God: I am the Lord."
A virtue this is which—it must be with shame confessed—although often displayed in an illustrious manner among the heathen, in many parts of Christendom has sadly decayed. In many lands one only needs to travel in any crowded conveyance to observe how far it is from the thoughts of many of the young "to rise up before the hoary head, and honour the face of the old man." So manifest are the facts that one hears from competent and thoughtful observers of the tendencies of our times no lamentation more frequently than just this, for the concurrent decay of reverence for the aged and reverence for God. No more beautiful remarks on these words have we found than the words quoted by Dr. H. Bonar, commenting on this verse: "Lo! the shadow of eternity! for one cometh who is almost in eternity already. His head and his beard, white as snow, indicate his speedy appearance before the Ancient of Days, the hair of whose head is as pure wool."
In this last command is also, no doubt, contained the thought of the comparative weakness and physical infirmity of the aged, which is thus commended in a special way to our tender regard. And thus this sentiment of kindly sympathy for all who are subject to any kind of disability naturally prepares the way for the injunction (vv. 33, 34) to regard "the stranger" in the midst of Israel, who was debarred from holding land, and from many privileges, with special feelings of good-will. "If a stranger sojourn with thee in your land, ye shall not do him wrong. The stranger that sojourneth with you shall be unto you as the home-born among you, and thou shalt love him as thyself; for ye were strangers in the land of Egypt: I am the Lord your God."
The Israelite was not to misinterpret, then, the restrictions which the theocratic law imposed upon such. These might be no doubt necessary for a moral reason; but, nevertheless, no man was to argue that the law justified him in dealing hardly with aliens. So far from this, the Israelite was to regard the stranger with the same kindly feelings as if he were one of his own people. And it is most instructive to observe that this particular case is made the occasion of repeating that most perfect and comprehensive law of universal love, "Thou shalt love thy neighbour as thyself;" and this the more they were to do that they too had been "strangers in the land of Egypt."
Last of all the injunctions in this chapter (vv. 35, 36) comes the command to absolute righteousness in the administration of justice, and in all matters of buying and selling; followed (ver. 37) by a concluding charge to obedience, thus: "Ye shall do no unrighteousness in judgment, in meteyard, in weight, or in measure. Just balances, just weights, a just ephah, and a just hin, shall ye have: I am the Lord your God, which brought you out of the land of Egypt. And ye shall observe all My statutes, and all My judgments, and do them: I am the Lord."
The ephah is named here, of course, as a standard of dry measure, and the hin as a standard of liquid measure. These commandments are illustrated in a graphic way by the parallel passage in Deut. xxv. 13, 14, which reads: "Thou shalt not have in thy bag divers weights, a great and a small. Thou shalt not have in thine house divers measures, a great and a small;" i.e., one set for use in buying, and another set for use in selling. This charge is there enforced by the same promise to honesty in trade which is annexed to the fifth commandment, namely, length of days; and, furthermore, by the declaration that all who thus cheat in trade "are an abomination unto the Lord."