IV. The third commandment must be so understood as to bring it into line with the two preceding, as of equal breadth and equally fundamental. It cannot, therefore, be confined to the use of the name of God in oaths, whether false or trivial. No doubt, perjury and profane swearing are included in the sweep of the prohibition; but it reaches far beyond them. The name of God is the declaration of His being and character. We take His name 'in vain' when we speak of Him unworthily. Many a glib and formal prayer, many a mechanical or self-glorifying sermon, many an erudite controversy, comes under the lash of this prohibition. Professions of devotion far more fervid than real, confessions in which the conscience is not stricken, orthodox teachings with no throb of life in them, unconscious hypocrisies of worship, and much besides, are gibbeted here. The most vain of all words are those which have become traditional stock in trade for religious people, which once expressed deep convictions, and are now a world too wide for the shrunk faith which wears them.
The positive side underlying the negative is the requirement that our speech of God shall fit our thought of God, and our thought of Him shall fit His Name; that our words shall mirror our affections, and our affection be a true reflection of His beauty and sweetness; that cleansed lips shall reverently utter the Name above every name, which, after all speech, must remain unspoken; and that we shall feel it to be not the least wonderful or merciful of His condescensions that He 'is extolled with our tongues.'
V. The series of commandments referring to Israel's relations with God is distinctly progressive from the first to the fourth, which deals with the Sabbath. The fact that it appears here, side by side with these absolutely universal and first principles of religion and worship, clearly shows that the giver of the code regarded it as of equal comprehensiveness. If we believe that the giver of the code was God, we seem shut up to the conclusion that, though the Sabbath is a positive institution, and in so far unlike the preceding commandments, it is to be taken as not merely a temporary or Jewish ordinance. The ground on which it is rested here points to the same conclusion. The version of the Decalogue in Deuteronomy bases it on the Egyptian deliverance, but this, on the divine rest after creation. As we have already said, we do not regard the Decalogue as binding on us because given to Israel; but we do regard it as containing laws universally binding, which are written by God's finger, not on tables of stone, but on 'the fleshly tables of the heart.' All the others are admittedly of this nature. Is not the Sabbath law likewise? It is not, indeed, inscribed on the conscience, but is the need for it not stamped on the physical nature? The human organism requires the seventh-day rest, whether men toil with hand or brain. Historically, it is not true that the Sabbath was founded by this legislation. The traces of its observance in Genesis are few and doubtful; but we know from the inscriptions that the seventh, fourteenth, twenty-first, and twenty-eighth days of the moon were set apart by the Assyrians, and scholars can supply other instances. The 'Remember' of this commandment can scarcely be urged as establishing this, for it may quite as naturally be explained to mean 'Remember, as each successive seventh day comes round, to consecrate it.' But apart from that, the law written on body, mind, and soul says plainly to all men, 'Rest on the seventh day.' Body and mind need repose; the soul needs quiet communion with God. No vigorous physical, intellectual, or religious life will long be kept up, if that need be disregarded. The week was meant to be given to work, which is blessed and right if done after the pattern of God's. The Sabbath was meant to lift to a share in His rest, to bring eternity into time, to renew wasted strength 'by a wise passiveness,' and to draw hearts dissipated by contact with fleeting tasks back into the stillness where they can find themselves in fellowship with God.