Bede

Saul therefore removed him from himself, etc. Just as those who are in charge of fifty soldiers are called centurions; so they are called chiliarchs in Greek, who are in charge of a thousand soldiers, whom the Latin custom delights in calling tribunes rather than millenaries from the fact that they are in charge of a tribe. Therefore, the Jews removed Christ from themselves, having despised His faith, and made Him provide the leadership of spiritual warfare more abundantly to the believers. …

Commentary on Samuel ↗