The command of the Lord as to the mode in which the fall of Jericho should be brought about is given in these verses in a condensed form. Further details (see Joshua 6:8-10, Joshua 6:16-17, etc.), were, no doubt, among the commands given to Joshua by the Angel.
Trumpets of ram’s horns - Render rather here and in Joshua 6:5-6, Joshua 6:8, etc., “trumpets of jubilee” (compareLeviticus 25:10 Leviticus 25:10 note). The instrument is more correctly rendered “cornet” (see Leviticus 25:9, note). Various attempts have been made to explain the fall of Jericho by natural causes, as, e. g., by the undermining of the walls, or by an earthquake, or by a sudden assault. But the narrative of this chapter does not afford the slightest warrant for any such explanations; indeed it is totally inconsistent with them. It must be taken as it stands; and so taken it intends, beyond all doubt, to narrate a miracle, or rather a series of miracles.
In the belief that a record is not necessarily unhistorical because it is miraculous, never perhaps was a miracle more needed than that which gave Jericho to Joshua. Its lofty walls and well-fenced gates made it simply impregnable to the Israelites - a nomad people, reared in the desert, destitute alike of the engines of war for assaulting a fortified town, and of skill and experience in the use of them if they had had them. Nothing line a direct interference of the Almighty could in a week’s time give a city like Jericho, thoroughly on its guard and prepared (compare Joshua 2:9 ff and Joshua 6:1), to besiegers situated as were Joshua and the Israelites.
The fall of Jericho cogently taught the inhabitants of Canaan that the successes of Israel were not mere human triumphs of man against man, and that the God of Israel was not as “the gods of the countries.” This lesson some of them at least learned to their salvation, e. g., Rahab and the Gibeonites. Further, ensuing close upon the miraculous passage of Jordan, it was impressed on the people, prone ever to be led by the senses, that the same God who had delivered their fathers out of Egypt and led them through the Red Sea, was with Joshua no less effectually than He had been with Moses.
And the details of the orders given by God to Joshua Joshua 6:3-5 illustrate this last point further. The trumpets employed were not the silver trumpets used for signalling the marshalling of the host and for other warlike purposes (compare Numbers 10:2), but the curved horns employed for ushering in the Jubilee and the Sabbatical Year (Septuagint, σάλπιγγες ἱεραί salpinges hierai: compare the Leviticus 23:24 note). The trumpets were borne by priests, and were seven in number; the processions round Jericho were to be made on seven days, and seven times on the seventh day, thus laying a stress on the sacred number seven, which was an emhlem more especially of the work of God. The ark of God also, the seat of His special presence, was carried round the city. All these particulars were calculated to set forth symbolically, and in a mode sure to arrest the attention of the people, the fact that their triumph was wholly due to the might of the Lord, and to that covenant which made their cause His.