31:1-8 Moses assures Israel of the constant presence of God with them. This is applied by the apostle to all God's spiritual Israel, to encourage their faith and hope; unto us is this gospel preached, as well as unto them; he will never fail thee, nor forsake thee, Heb 13:5. Moses commends Joshua to them for a leader; one whose wisdom, and courage, and affection they had long known; one whom God had appointed to be their leader; and therefore would own and bless. Joshua is well pleased to be admonished by Moses to be strong and of good courage. Those shall speed well, who have God with them; therefore they ought to be of good courage. Through God let us do valiantly, for through him we shall do victoriously; if we resist the devil, he will flee from us.And the Lord, he it is that doth go before thee,.... The Word of the Lord, his Shechinah, according to the above Targum, and so in the next clause; the same that brought Israel out of Egypt, had gone before them in the wilderness, and now would go before Joshua and them into the land of Canaan:

he will be with thee; to guide and direct, to assist and strengthen, to protect and defend, to give success to his arms, and victory over his enemies:

he will not fail thee, neither forsake thee; not fail to give him counsel and direction, to afford him strength, and to fill him with courage, and to deliver his enemies into his hands; nor forsake him till he had finished the work he was to do, had made a complete conquest of the Canaanites, and settled the people of Israel in their land:

fear not, neither be dismayed; at the number and strength of the enemy, nor at any difficulties that might lie in the way of finishing so great an undertaking, since the Lord would be with him; see Romans 8:31.