III. Special precepts as to the control of the animal nature follow in verses 19-21. First, note that general one of verse 19, 'Guide thine heart in the way.' In most general terms, the necessity of self-government is laid down. There is a 'way' in which we should be content to travel. It is a definite path, and feet have to be kept from straying aside to wide wastes on either hand. Limitation, the firm suppression of appetites, the coercing of these if they seek to draw aside, are implied in the very conception of 'the way.' And a man must take the upper hand of himself, and, after all other guidance, must be his own guide; for God guides us by enabling us to guide ourselves.
Temperance in the wider sense of the word is prominent among the virtues flowing from fear of the Lord, and is the most elementary instance of 'guiding the heart.' Other forms of self-restraint in regard to animal appetites are spoken of in the context, but here the two of drunkenness and gluttony are bracketed together. They are similarly coupled in Deuteronomy xxi. 20, in the formula of accusation which parents are to bring against a degenerate son. Allusion to that passage is probable here, especially as the other crime mentioned in it--namely, refusal to 'hear' parental reproof--is warned against in verse 22. The picture, then, here is that of a prodigal son, and we have echoes of it in the great parable which paints first riotous living, and then poverty and misery.
Drunkenness had obviously not reached the dimensions of a national curse in the date when this lesson was written. We should not put over-eating side by side with it. But its ruinous consequences were plain then, and the bitter experience of England and America repeats on a larger scale the old lesson that the most productive source of poverty, wretchedness, rags, and vice, is drink. Judges and social reformers of all sorts concur in that now, though it has taken fifty years to hammer it into the public conscience. Perhaps in another fifty or so society may have succeeded in drawing the not very obscure inference that total abstinence and prohibition are wise. At any rate, they who seek after the fear of the Lord should draw it, and act on it.
IV. The last part is in verses 22 and 23. The appeal to filial duty cannot here refer to disciple and teacher, but to child and parents. It does not stand as an isolated precept, but as underscoring the important one which follows. But a word must be spared for it. The habits of ancient days gave a place to the father and mother which modern family life woefully lacks, and suffers in many ways for want of. Many a parent in these days of slack control and precocious independence might say, 'If I be a father, where is mine honour?' There was perhaps not enough of confidence between parent and child in former days, and authority on the one hand and submission on the other too much took the place of love; but nowadays the danger is all the other way--and it is a very real danger.
But the main point here is the earnest exhortation of verse 23, which, like that to the fear of the Lord, sums up all duty in one. The 'truth' is, like 'wisdom,' moral and religious, and not merely intellectual. 'Wisdom' is subjective, the quality or characteristic of the devout soul; 'truth' is objective, and may also be defined as the declared will of God. The possession of truth is wisdom. 'The entrance of Thy words giveth light.' It makes wise the simple. There is, then, such a thing as 'the truth' accessible to us. We can know it, and are not to be for ever groping amid more or less likely guesses, but may rest in the certitude that we have hold of foundation facts. For us, the truth is incarnate in Jesus, as He has solemnly asserted. That truth we shall, if we are wise, 'buy,' by shunning no effort, sacrifice, or trouble needed to secure it.