It is remarkable what a hold that incident at Rephidim has taken on the Christian imagination. Age after age, for more than three thousand years, its influence has been felt. Nor can it ever cease to impress believing men that, so long as Moses holds out his rod, so long as active trust is placed in the power and presence of the Most High in the great battle with sin and evil, Israel must prevail; but if this trust should fail, if Moses should let down his rod, Amalek will conquer. It was well that Moses was instructed to write the transaction in a book and rehearse it before Joshua. Well also that it should be commemorated by another memorial, an altar to the Lord with the name of "Jehovah-nissi," the Lord my banner. How often has faith looked out towards that unknown mountain where Aaron and Hur held up the weary arms of Moses, and what a new thrill of courage and hope has the spectacle sent through hearts often "faint yet pursuing"! Happily on Joshua the effect was wholesome; a less spiritual man would have been puffed up by his remarkable victory; but in him its only effect, as was shown by the whole tenor of his future life, was a firmer trust in God, and a deeper determination to wait only on Him.
It was no wonder that after this Joshua was selected by Moses to be his personal comrade and attendant in connection with that most solemn of all his duties--the receiving of the law on the top of the mount. Here again was a most distinguished honour for so young a man. Aaron, Nadab, and Abihu, with seventy of the elders, were summoned to ascend to a certain height and worship afar off; while Moses, accompanied by Joshua, went up into the mount of God (Exod. xxiv. 13). What became of Joshua while Moses was in immediate fellowship with God is not very apparent. The first impression we derive from the narrative is that he was with Moses all the time, for when Moses begins his descent Joshua is at his side (Exod. xxxii. 17). Yet we cannot suppose that in that most solemn transaction of Moses with Jehovah when the law was given any third party was present. On a careful study of the narrative throughout it will probably be seen that when, after going up a certain distance in company with Aaron and his sons and the seventy elders, Moses was called to a higher part of the mount, Joshua accompanied Moses (Exod. xxiv. 13), and that he was with Moses during the six days when the glory of God abode on Mount Sinai and a cloud covered the mount (ver. 15); but that when God again, after these six days, called to Moses to ascend still higher, and Moses "went into the midst of the cloud, and gat him up to the mount" (ver. 18), Joshua remained behind. His place of rest would thus be half-way between the spot where the elders saw God's glory and the summit where God talked with Moses. But the remarkable thing is, that from that place Joshua would seem never to have moved all the forty days and forty nights when Moses was with God. We can hardly conceive a case of more remarkable obedience, a more striking instance of the quiet waiting of faith. To a youth of his spirit and habits the restraint must have been somewhat trying. We know that Aaron did not remain long on the hill, for he was at hand when the people cried for "gods to go before them" (Exod. xxxii. 1). Impatience of God's slow methods had been a snare to the fathers--to Abraham and Sarah in the matter of Hagar; to Rachel when she raised the petulant cry, "Give me children, or else I die"; to Jacob when the promises seemed broken to atoms, and "all things" seemed "against him." Joseph alone had stood the trial of patience, and now Joshua showed himself of the like spirit. The word of Moses to him was like an anchor holding the ship firmly against the force of wind and tide. What a solemn time it must have been, and what a precious lesson it must have taught him for the whole future of his life!