John Calvin's Bible Commentary
Psalms 133:1
1.Behold how good, etc. I have no doubt that David in this Psalm renders thanks to God for the peace and harmony which had succeeded a long and melancholy state of confusion and division in the kingdom, and that he would exhort all individually to study the maintenance of peace. This is the subject enlarged upon, at least so far as the shortness of the Psalm admits of it. There was ample ground to praise the goodness of God in the highest terms, for uniting in one a people which had been so deplorably divided. When he first came to the kingdom the larger part of the nation considered him in the light of an enemy to the public good, and were alienated from him. Indeed so mortal was the feud which existed, that nothing else than the destruction of the party in opposition seemed to hold out the prospect of peace. The hand of God was wonderfully seen, and most unexpectedly, in the concord which ensued among them, when these who had been inflamed with the most violent antipathy cordially coalesced. This (147) peculiarity in the circumstances which called forth the Psalm has been unfortunately by interpreters, who have considered that David merely passes a general commendation upon brotherly union, without any such particular reference. The exclamation with which the Psalm opens, Behold! is particularly expressive, not only as setting the state of things visibly before our eyes, but suggesting a tacit contrast between the delightfulness of peace and those civil commotions which had wellnigh rent the kingdom asunder. He sets forth the goodness of God in exalted terms, the Jews having by long experience of intestine feuds, which had gone far to ruin the nation, learned the inestimable value of union. That this is the sense of the passage appears still further from the particle גם, gam, at the end of the verse. It is not to be understood with some, who have mistaken the sense of the Psalmist, as being a mere copulative, but as adding emphasis to the context. We, as if he had said, who were naturally brethren, had become so divided, as to view one another with a more bitter hatred than any foreign foe, but now how well is it that we should cultivate a spirit of brotherly concord!
There can at the same time be no doubt; that the Holy Ghost is to be viewed as commending in this passage that mutual harmony which should subsist amongst all God’s children, and exhorting us to make every endeavor to maintain it. So long as animosities divide us, and heartburnings prevail amongst us, we may be brethren no doubt still by common relation to God, but cannot be judged one so long as we present the appearance of a broken and dismembered body. As we are one in God the Father, and in Christ, the union must be ratified amongst us by reciprocal harmony, and fraternal love. Should it so happen in the providence of God, that the Papists should return to that holy concord which they have apostatized from, it would be in such terms as these that we would be called to render thanksgiving unto God, and in the meantime we are bound to receive into our brotherly embraces all such as cheerfully submit themselves to the Lord. We are to set ourselves against those turbulent spirits which the devil will never fail to raise up in the Church, and be sedulous to retain intercourse with such as show a docile and tractable disposition. But we cannot extend this intercourse to those who obstinately persist in error, since the condition of receiving them as brethren would be our renouncing him who is Father of all, and from whom all spiritual relationship takes its rise. The peace which David recommends is such as begins in the true head, and this is quite enough to refute the unfounded charge of schism and division which has been brought against us by the Papists, while we have given abundant evidence of our desire that they would coalesce with us in God’s truth, which is the only bond of holy union.