Joshua 2:11

When we heard of it, our hearts melted in fear and everyone’s courage failed because of you, for the LORD your God is God in heaven above and on the earth below.

John Calvin
Here the image of Rahab’s faith appears, as if reflected in a mirror, when casting down all idols she ascribes the government of heaven and earth to the God of Israel alone. For it is perfectly clear that when heaven and earth are declared subject to the God of Israel, there is a repudiation of all the pagan fictions by which the majesty and power and glory of God are portioned out among different deities; and hence we see that it is not without cause that two Apostles have honoured Rahab’s conduct with the title of faith. This is sneered at by some proud and disdainful men but I wish they would consider what it is to distinguish the one true God from all fictitious deities, and at the same time so to extol his power as to declare that the whole world is governed at his pleasure. Rahab does not speak hesitatingly, but declares, in absolute terms, that whatever power exists resides in the God of Israel alone, that he commands all the elements, that he orders all things above and below, and determines human affairs. Still I deny not that her faith was not fully developed, nay, I readily admit, that it was only a germ of piety which, as yet, would have been insufficient for her eternal salvation. We must hold, nevertheless, that however feeble and slender the knowledge of God which the woman possessed may have been, still in surrendering herself to his power, she gives a proof of her election, and that from that seed a faith was germinating which afterwards attained its full growth.

Joshua 1:8

Do not let this Book of the Law depart from your mouth; meditate on it day and night, so that you may be careful to do everything written in it. Then you will be prosperous and successful.

John Calvin

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.

Intro

Matthew Henry

We have next before us the book of Joshua, so called, perhaps, not because it was written by him, for that is uncertain. Dr Lightfoot thinks that Phinehas wrote it. Bishop Patrick is clear that Joshua wrote it himself. However that be, it is written concerning him, and, if any other wrote it, it was collected out of his journals or memoirs. It contains the history of Israel under the command and government of Joshua, how he presided as general of their armies

1. In their entrance into Canaan, ch. 1-5

2. In their conquest of Canaan, ch. 6-12

3. In the distribution of the land of Canaan among the tribes of Israel, ch. 22-24

In all which he was a great example of wisdom, courage, fidelity, and piety, to all that are in places of public trust. But this is not all the use that is to be made of this history. We may see in it

1. Much of God and his providence - his power in the kingdom of nature, his justice in punishing the Canaanites when the measure of their iniquity was full, his faithfulness to his covenant with the patriarchs, and his kindness to his people Israel, notwithstanding their provocations. We may see him as the Lord of Hosts determining the issues of war, and as the director of the lot, determining the bounds of men's habitations.

2. Much of Christ and his grace. Though Joshua is not expressly mentioned in the New Testament as a type of Christ, yet all agree that he was a very eminent one. He bore our Saviour's name, as did also another type of him, Joshua the high priest (Zc 6:11,12). The Septuagint, giving the name of Joshua a Greek termination, call him all along Iesous Jesus, and so he is called Acts 7:45, Heb 4:8. Justin Martyr, one of the first writers of the Christian church (Dialog. cum Tryph. p. mihi 300), makes that promise in Ex 23:20 My angel shall bring thee into the place I have prepared, to point at Joshua; and these words, My name is in him, to refer to this, that his names should be the same with that of the Messiah. It signifies, He shall save. Joshua saves God's people from the Canaanites; our Lord Jesus saves them from their sins. Christ, as Joshua, is the captain of our salvation, a leader and commander of the people, to tread Satan under their feet, to put them in possession of the heavenly Canaan, and to give them rest, which (it is said, Heb 4:8) Joshua did not.