John Wesley on Deuteronomy 34:6

He - The Lord, buried him either immediately, or by the ministry of angels, whereof Michael was the chief or prince. Of his sepulchre - Of the particular place where he was buried: which God hid from the Israelites, to prevent their superstition and idolatry, to which he knew their great proneness. And for this very reason the devil endeavoured to have it known and contended with Michael about it, Jude 1:9. God takes care even of the dead bodies of his servants. As their death is precious, so is their dust. Not one grain of it shall be lost, but the covenant with it shall be remembered.