Amon (אָמוֹן) has multiple OT referents: (1) Amon the god of Thebes (Amun), meaning "the hidden one" in Egyptian; (2) King Amon of Judah, wicked son of Manasseh (2 Kings 21:19–26); (3) No-Amon (Thebes), the great Egyptian capital and city of Amon (Nahum 3:8; Jeremiah 46:25).
The fall of No-Amon (Thebes) was used by Nahum as a warning to Nineveh (Nahum 3:8): if mighty Thebes fell, so will you. God's sovereign control extends over the gods and empires of the ancient world. Israel's God triumphed over Amon in the Exodus (Numbers 33:4: "He brought judgment on their gods"). King Amon of Judah served as a negative contrast to his son Josiah's great reformation — demonstrating that faithful succession requires personal faith, not just family heritage.