How do we know that Christ is the captain of the Lord's host?

In the account of Joshua 5, when Joshua encounters a man with a sword drawn, he asks if he is for them or their adversaries. The man's response as the captain of the Lord's host indicates His divine authority over the armies of heaven. This encounter reaffirms that Christ is not merely an angel but the sovereign commander who leads God's armies into battle. The title underscores His readiness to defend His people and highlights His active role in the history of redemption. This illustration is crucial for Christians, reminding them that their battles are ultimately fought by the Lord who protects and guides them.