Joshua 5:15

And the Captain of the Lord's host said unto Joshua, Loose thy shoe from off thy foot, as Moses did in the presence of the burning bush, Exodus 3:5; for the place whereon thou standest is holy. This undoubtedly reminded Joshua of the experience of Moses, and proved to him that this Prince of the heavenly host was He who had manifested Himself to Moses as the God of Abraham, of Isaac, and of Jacob. And Joshua did so. It is then that we may expect manifestations of Christ's divine grace and mercy, when we use the means of grace instituted by Him and are found in the way of our duty. Then it is also that He encamps round about us with the host of His angels and wages war for His Church against the world and the devil.