v1-3: The glory of Babylon will be destroyed; in 13.19, Babylon was the glory of the kingdoms, the beauty of the Chaldeans' pride. It is significant that, during Isaiah's ministry, Babylon was not an influential power. So Isaiah looked forward to the rise of Babylon, as well as to its defeat; see Dan 5.30-31.
The image is of a pampered virgin, tender and delicate, letting others work hard for her benefit. The judgment is that she will sit in the dust, as in mourning, be forced to do menial work, and to be exposed as a harlot.
v4: In the midst of the words about Babylon, a reminder that the Lord God is the "Holy One of Israel." Babylon would be judged for the way she treated the people of God.
v5-6: Like Assyria, Babylon was an instrument in God's hand. He delivered Judah over to her, but she showed no mercy, see Hab 1.6-7, a bitter and hasty nation, terrible and dreadful.
v7: Babylon was also guilty of pride, and ignorant of her calling; compare 10.13; 45.4.
v8: Babylon guilty also of hedonism, given over to pleasure. Babylon sought the glory that belonged only to God, see 43.11; 45.5; 46.9. Like Herod (Acts 12.22-23) and Tyre (Ezek 28.8), she was judged by God.
v9: Sudden judgment, Rev 18.8.
Babylon had used "sorceries … potent spells", following occult religion, as in v12-13.
v10: Babylon trusted in her own wickedness, thinking she was accountable to no one; considered herself exalted over all the kingdoms.
The pursuit of human knowledge and wisdom instead of seeking the true God; the effect is corruption, in financial dishonesty, in corrupted thinking, in false religion.
v11: The judgments of God will demonstrate the impotence of Babylon's occult religion; disaster, calamity, catastrophe; it can't be conjured away, warded off, of foreseen.
v12-15: Human schemes are seen as impotent; no human religion or wisdom can deliver from the hand of God. The nation of Babylon would persist in her magic spells and sorcery, following her astrologers and stargazers.