Charles Ellicott Commentary Ezekiel 23:6

"who were clothed with blue, governors and rulers, all of them desirable young men, horsemen riding upon horses." — Ezekiel 23:6 (ASV)

Horsemen. —The Assyrians, like the Egyptians, made large use of cavalry, as was necessary for a warlike nation; for this reason, the multiplication of horses had been forbidden to the Israelites (Deuteronomy 17:16).