Exodus 15:10

Thou didst blow with Thy wind, the sea covered them; they sank as lead in the mighty waters, they sank from view like a plummet, and the rushing billows of the great sea bore witness to the glory of the Creator. Thus the second stanza of the hymn is concluded.

And it came to pass, as Aaron spake unto the whole congregation of the children of Israel, that they looked toward the wilderness, and, behold, the glory of the Lord appeared in the cloud. This appearance confirmed the reproof and the promise given by the mouth of the Lord's ambassadors, and incidentally indicated to them that God was able to manifest Himself in their midst even in the desert wastes which now lay before them.