When ye blow an alarm the second time, then the camps that lie on the south side shall take their journey: they shall blow an alarm for their journeys.

And at the second sounding and like noise of the trumpet, they who lie on the south side shall take up their tents. And after this manner shall the rest do, when the trumpets shall sound for a march.

And when ye blow an alarm the second time, the camps that lie southward shall set forward; they shall blow an alarm on their setting forward.

And ye have blown, a second shout, and the camps which are encamping southward have journeyed; a shout they blow for their journeys.

At the sound of a second loud note, the tents on the south side are to go forward: the loud note will be the sign to go forward.

And when ye blow an alarm the second time, the camps that lie on the south side shall set forward; they shall blow an alarm for their journeys.

Then, at the second sounding of the trumpet with the same cadence, those who live toward the south shall take up their tents. And the remainder shall act in like manner, when the trumpets shall reverberate for a departure.

Quum autem clanxeritis cum jubilatione secundo, tum proficiscentur castra eorum qui castrametantur ad meridiem; cum jubilatione clangent in profectionibus suis.

When ye blow an alarm the second time - A single alarm, as above stated, was a signal for the eastward division to march; two such alarms, the signal for the south division; and probably three for the west division, and four for the north. It is more likely that this was the case, than that a single alarm served for each, with a small interval between them. The camps, or grand divisions of this great army, always lay, as we have already seen, to the east, south, west, and north: and here the east and south camps alone are mentioned; the first containing Judah, Issachar, and Zebulun; the second, Reuben, Simeon, and Gad. The west and north divisions are not named, and yet we are sure they marched in consequence of express orders or signals, as well as the other two. There appears therefore a deficiency here in the Hebrew text, which is thus supplied by the Septuagint: Και σαλπιειτε σημασιαν τριτην, και εξαρουσιν αἱ παρεμβολαι αἱ παρεμβαλλουσαι παρα θαλασσαν· και σαλπιειτε σημασιαν τεταρτην, και εξαρουσιν αἱ παρεμβολαι αἱ παρεμβαλλουσαι προς βορῥαν. "And when ye blow a third alarm or signal, the camps on the west shall march: and when ye blow a fourth alarm or signal, the camps on the north shall march." This addition, however, is not acknowledged by the Samaritan, nor by any of the other versions but the Coptic. Nor are there any various readings in the collections of Kennicott and De Rossi, which countenance the addition in the above versions. Houbigant thinks this addition so evidently necessary, that he has inserted the Latin in his text, and in a note supplied the Hebrew words, and thinks that these words were originally in the Hebrew text, but happened to be omitted in consequence of so many similar words occurring so often in the same verse, which might dazzle and deceive the eye of a transcriber.

When ye blow an alarm the second time, then the camps that lie on the (c) south side shall take their journey: they shall blow an alarm for their journeys.
(c) Meaning, the heart of Reuben.

When ye blow an alarm the second time,.... Another "tara-tan-tara":
then the camps that lie on the south side shall take their journey; the camps of Reuben, Simeon, and Gad, which were encamped on the south side of the tabernacle, Numbers 2:10; and, as Josephus (k) says, at the third sounding of the alarm, that part of the camp which lay to the west moved, which were the camps of Ephraim, Manasseh, and Benjamin, Numbers 2:18; and at the fourth sounding, as he says, those which were at the north, the camps of Daniel, Asher, and Naphtali, Numbers 2:25; which, though not expressed in the Hebrew text, are added in the Septuagint version, as they are to be understood:
they shall blow an alarm for their journeys; for the journeys of the said camps, as a signal or token when they should begin to march.
(k) Ut supra. (Antiq. l. 3. c. 12. sect. 6.)

For their journeys - As a sign for them to march forward, and consequently for the rest to follow them.