Albert Barnes Commentary Ezekiel 16:28

"Thou hast played the harlot also with the Assyrians, because thou wast insatiable; yea, thou hast played the harlot with them, and yet thou wast not satisfied." — Ezekiel 16:28 (ASV)

Compare the marginal reference. Idolatry, spiritual adultery, invariably accompanied these unholy alliances, and brought with it disaster and ruin.