Ezekiel 23:6

Which were clothed with blue, captains and rulers, all of them desirable young men, horsemen riding upon horses.

Cross-reference

Ezekiel 23:12-15 describes Oholibah's similar lust for Babylonians—same language of desirable men and horsemen.

Ezekiel 23:23 lists the Babylonian lovers Oholibah lusts after—using the same 'horsemen riding on horses' phrase.