John Calvin's Bible Commentary
Numbers 13:30
30.And Caleb stilled the people before Moses. That is, he restrained the murmurs of the people before Moses, against whom they had begun to rise tumultuously. Hence it appears that much was said on both sides which is passed over in silence, for there would have been no need of restraining the violence of the people, unless the contention had waxed warm. His words, however, show what was the state of the whole case and question, viz., that the ten treacherous spies had dissuaded the people from foolishly advancing to the land, which it was impossible to win; and urged them not to attack rashly very powerful enemies, to whom they would be far from equally matched. But Caleb opposes them with the confidence of victory. We (he says) shall conquer the land, and upon this he grounds his exhortation. Moreover, there is no doubt but that, relying on God’s promise, he believed that they would, be successful, and thus boldly foretold it, whilst the others took not at all into consideration that, with the banner of the Lord before them, the people would come into the promised inheritance.
This does not appear to accord with what Moses relates in Deuteronomy 1:0, where he absolves the spies, and casts the whole blame on the people; but the contradiction is easily reconciled, for there he had no other object than to assert the criminality of the Israelites, who, by their contumacy, had for a long time impeded the fulfillment of God’s promise. Omitting, therefore, that part of the history which did not affect the matter in hand, he only adverts to that which convicted them of wicked ingratitude, i.e., that the fertility of the land was commended by the spies; and consequently, since the people were abundantly assured of God’s liberality, that they sinned grossly by rejecting it. He, therefore, states their crime to have been, that they were rebellious against the mouth or word of Jehovah, viz., because they had refused to follow Him when He invited them.
What Moses here ascribes to Caleb alone, he elsewhere attributes to Joshua also. It is plain, then, that Caleb spoke for both of them, and that Joshua was prudently and modestly silent, lest a tumultuous altercation should arise. It may, however, be probably conjectured that the bravery and firmness of him, who is praised, was the more conspicuous, whilst the honesty of Moses is perceivable, inasmuch as, by his preference of Caleb, he obscures and diminishes the praise due to his own minister.