Jamieson, Fausset and Brown on Zechariah 2:7

7. O Zion ... daughter of Babylon--Thou whose only sure dwelling is "Zion," inseparably connected with the temple, art altogether out of thy place in "dwelling with the daughter of Babylon" (that is, Babylon and her people, Psa 137:8; Is 1:8).

After the glory--After restoring the "glory" (Zec 2:5; Is 4:5; Ro 9:4) of Jehovah's presence to Jerusalem, He (God the Father) hath commissioned ME (God the Son, Is 48:16, the Divine Angel: God thus being at once the Sender and the Sent) to visit in wrath "the nations which spoiled you." Messiah's twofold office from the Father is: (1) to glorify His Church; (2) to punish its foes (2Th 1:7-10). Both offices manifest His glory (Pr 16:4).

toucheth ... the apple of his eye--namely, of Jehovah's eye (De 32:10; Psa 17:8; Pr 7:2). The pupil, or aperture, through which rays pass to the retina, is the tenderest part of the eye; the member which we most sedulously guard from hurt as being the dearest of our members; the one which feels most acutely the slightest injury, and the loss of which is irreparable.