After the children of Israel had been formed into an army, they were ready to journey to fight for God so that He could gain the ground on earth to build up His kingdom with His house. Their moving was not up to them; it was altogether according to God’s guidance. The guidance for the children of Israel in their move was both from the heavens (the cloud — vv. 15-23) and from the earth (the two trumpets — 10:1-10). The guidance in the form of a cloud signifies God in the sense of God’s presence, i.e., God Himself consummated to be the Spirit. This indicates that the New Testament believers should always follow the indwelling Spirit (Rom. 8:4, 14; Gal. 5:16, 18, 25).