The word is [חמר], which many have rendered acervus—heap; but there is no clear instance in which it has such a meaning. It is without a preposition, and the Septuagint render it by a participle, ταρασσοντας, which agrees with “horses.” It is singular in Hebrew, and, if a participle, it agrees with the nominative case to the preceding verb, [דרכת], “thou didst guide” or direct. The two lines might then be rendered thus,— Thou didst guide through the sea thy horses, Disturbing mighty waters. Both Marckius and Henderson think that the passage through the Red Sea is not what is meant; but the subjugation of the Canaanites, conveyed in a language derived from that event.—Ed.