ישעיהו מג:ו פירוש: רש״י ואבן עזרא

I will say to the north wind, “Give the exiles who are in the north.”

Give up my children.

and to the south which is a strong wind, “Do not refrain from blowing strongly to bring My exiles.” Similarly (Song 4: 16), “Awaken, O north wind, and come, O south wind.” Since the north wind is weak, it needs strengthening. Therefore, it is written, “Awaken,” “Give.” But concerning the south wind which does not need straightening, it is written, “Come,” as it is, and so, “Do not refrain.”