Ezekiel 23:6

Which were clothed with blue
A colour the Assyrians were fond of, and clothed their soldiers in, and was taking to the eye; and is mentioned, because that men, finely clothed find beautifully arrayed, are more engaging to women, who are fond of dress: captains and rulers;
men of power and authority in military and civil affairs, either in the camp, or in the court; officers either in the army, or in the king's palace; and which was a recommendation of them: desirable young men;
for their youth, strength, beauty, and honourable employments and offices: horsemen riding upon horses:
of which there was a scarcity in Judea; wherefore such were the more desirable to them, as appearing more grand, and being more serviceable and helpful to them.