John Gill

Be not afraid of their faces,.... Their stern looks, their frowning brows, and angry countenances, which would threaten him with destruction and death: for I am with thee, to deliver thee, saith the Lord; out of their hands, when in the most imminent danger. The Targum paraphrases the words thus, "my Word shall be thine help to deliver thee:'' which is true of Christ, the essential Word of God.