beautiful ... feet - that is, The advent of such a herald seen on the distant “mountains” (see on Isa 40:9; see on Isa 41:27; see on Isa 25:6, Isa 25:7; see on Son 2:17) running in haste with the long-expected good tidings, is most grateful to the desolated city (Nah 1:15).
good tidings - only partially applying to the return from Babylon. Fully, and antitypically, the Gospel (Luk 2:10, Luk 2:11), “beginning at Jerusalem” (Luk 24:47), “the city of the great King” (Mat 5:35), where Messiah shall, at the final restoration of Israel, “reign” as peculiarly Zion’s God (“Thy God reigneth”; compare Psa 2:6).