Exodus 14:19

19.And the angel of God. A sudden change which occurred to prevent a battle is here described; for the angel:, who used to go before the Israelites to show the way: turned to the other side, that he might be interposed between the two camps; and this, in two respects, because the pillar of fire shone upon the Israelites to dissipate the darkness of the night, whilst thick darkness held the Egyptians as it were in captivity, so that they were unable to proceed further. Thus did God both prevent them from advancing, and also held out a torch for His people all night to light them on their way. He, who has been called “Jehovah” hitherto, is now designated by Moses “the Angel;” not only because the angels who represent God often borrow His name, but because this Leader of the people was God’s only-begotten Son, who afterwards was manifested in the flesh, as I have shown upon the authority of Paul. (1 Corinthians 10:4.) It may be remarked, also, that he is said to have moved here and there, as He showed some token of His power and assistance. Most clearly, too, does it appear, that the glory of God, whilst it enlightens the faithful, overshadows the unbelievers, on the other hand, with darkness. No wonder, then, if now-a-days the brightness of the Gospel should blind the reprobate. But we should ask of God to make us able to behold His glory.