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6. Be strong, etc An exhortation to fortitude is added, and indeed repeated, that it may make the deeper impression. At the same time the promise is introduced in different words, in which Joshua is assured of his divine call, that he might have no hesitation in undertaking the office which had been divinely committed to him, nor begin to waver midway on being obliged to contend with obstacles. It would not have been enough for him diligently to begirt himself at the outset without being well prepared to persevere in the struggle.

Although it is the property of faith to animate us to strenuous exertion, in the same way as unbelief manifests itself by cowardice or cessation of effort, still we may infer from this passage, that bare promises are not sufficiently energetic without the additional stimulus of exhortation. For if Joshua, who was always remarkable for alacrity, required to be incited to the performance of duty, how much more necessary must it be that we who labor under so much sluggishness should be spurred forward.

We may add, that not once only or by one single expression are strength and constancy required of Joshua, but he is confirmed repeatedly and in various terms, because he was to be engaged in many and various contests. He is told to be of strong and invincible courage. Although these two epithets make it obvious that God was giving commandment concerning a most serious matter, still not contented with this reduplication, he immediately after repeats the sentence, and even amplifies it by the addition of the adverb very.

From this passage, therefore, let us learn that we can never be fit for executing difficult and arduous matters unless we exert our utmost endeavors, both because our abilities are weak, and Satan rudely assails us, and there is nothing we are more inclined to than to relax our efforts. ²¹²¹     French, “Et il ne faut qu’un rien pour nous faire perdre courage;” “and a mere nothing is all that is necessary to make us lose courage.” — Ed. But, as many exert their strength to no purpose in making erroneous or desultory attempts, it is added as a true source of fortitude that Joshua shall make it his constant study to observe the Law. By this we are taught that the only way in which we can become truly invincible is by striving to yield a faithful obedience to God. Otherwise it were better to lie indolent, and effeminate than to be hurried on by headlong audacity.

Moreover, God would not only have his servant to be strong in keeping the Law, but enjoins him to contend manfully, so as not to faint under the burden of his laborious office. But as he might become involved in doubt as to the mode of disentangling himself in matters of perplexity, or as to the course which he ought to adopt, he refers him to the teaching of the Law, because by following it as a guide he will be sufficiently fitted for all things. He says, You shall act prudently in all things, provided you make the Law your master; although the Hebrew word שכל, means to act not only prudently but successfully, because temerity usually pays the penalty of failure.

Be this as it may, by submitting entirely to the teaching of the Law he is more surely animated to hope for divine assistance. For it is of great consequence, when our fears are excited by impending dangers, to feel assured that we have the approbation of God in whatever we do, inasmuch as we have no other object in view than to obey his commands. Moreover, as it would not be enough to obey God in any kind of way, ²²²²     The French adds, “Ou en quelques points;” “Or in some points.” — Ed. Joshua is exhorted to practice a modesty and sobriety which may keep him within the bounds of a simple obedience.

Many, while possessed of right intention, sometimes imagine themselves to be wiser than they ought, and hence either overlook many things through carelessness, or mix up their own counsels with the divine commands. The general prohibition, therefore, contained in the Law, forbidding all men to add to it or detract from it, God now specially enforces on Joshua. For if private individuals in forming their plan of life behoove to submit themselves to God, much more necessary must this be for those who hold rule among the people. But if this great man needed this curb of modesty that he might not overstep his limits, how intolerable the audacity if we, who fall so far short of him, arrogate to ourselves greater license? More especially, however, did God prescribe the rule of his servant, in order that those who excel in honor might know that they are as much bound to obey it as the meanest of the people.

8. This book of the Law, etc Assiduous meditation on the Law is also commanded; because, whenever it is intermitted, even for a short time, many errors readily creep in, and the memory becomes rusted, so that many, after ceasing from the continuous study of it, engage in practical business, as if they were mere ignorant tyros. God therefore enjoins his servant to make daily progress, and never cease, during the whole course of his life, to profit in the Law. Hence it follows that those who hold this study in disdain, are blinded by intolerable arrogance.

But why does he forbid him to allow the Law to depart from his mouth rather than from his eyes? Some interpreters understand that the mouth is here used by synecdoche for face; but this is frigid. I have no doubt that the word used is peculiarly applicable to a person who was bound to prosecute the study in question, not only for himself individually, but for the whole people placed under his rule. He is enjoined, therefore, to attend to the teaching of the Law, that in accordance with the office committed to him, he may bring forward what he has learned for the common benefit of the people. At the same time he is ordered to make his own docility a pattern of obedience to others. For many, by talking and discoursing, have the Law in their mouth, but are very bad keepers of it. Both things, therefore, are commanded, that by teaching others, he may make his own conduct and whole character conformable to the same rule.

What follows in the second clause of the verse shows, that, everything which profane men endeavor to accomplish in contempt of the word of God, must ultimately fail of success, and that however prosperous the commencement may sometimes seem to be, the issue will be disastrous; because prosperous results can be hoped for only from the divine favor, which is justly withheld from counsels rashly adopted, and from all arrogance of which contempt of God himself is the usual accompaniment. Let believers, therefore, in order that their affairs may turn out as they wish, conciliate the divine blessing alike by diligence in learning and by fidelity in obeying.

In the end of the verse, because the term used is ambiguous, as I have already observed, the sentence is repeated, or a second promise is added. The latter is the view I take. For it was most suitable, that after the promised success, Joshua should be reminded that men never act skillfully and regularly except in so far as they allow themselves to be ruled by the word of God. Accordingly, the prudence which believers learn from the word of God, is opposed to the confidence of those who deem their own sense sufficient to guide them aright. ²³²³     The French paraphrases the whole sentence thus: “Ainsi la prudence et sagesse que les fideles apprennent de la parole de Dieu, est opposee a l’assurance de ceux auxquels il semble bien qu’ils se gouvernent assez discretement et sagement, quand ils besongnent selon leur propre sens;” “Thus the prudence and wisdom which believers learn from the word of God, is opposed to the assurance of those who think they govern themselves discreetly and wisely enough, when they manage according to their own sense.” — Ed.

9. Have not I commanded, etc Although in Hebrew a simple affirmation is often made in the form of a question, and this phraseology is of very frequent occurrence, here, however, the question is emphatic, to give an attestation to what had previously been taught, while the Lord, by bringing his own authority distinctly forward, relieves his servant from care and hesitancy. He asks, Is it not I who have commanded thee? I too will be present with thee. Observe the emphasis: inasmuch as it is not lawful to resist his command. ²⁴²⁴     French, “C’est bien pour certain avec grande signifiance que ceci se dit d’autant qu’il n’est pas question de resister a son commandement;” “It is certainly with great significancy that this is said, inasmuch as there is no question of resisting his command.” — Ed. This passage also teaches that nothing is more effectual to produce confidence than when trusting to the call and the command of God, and feeling fully assured of it in our own conscience, we follow whithersoever he is pleased to lead.