2. Two reasons are here given why he should do thus:—(1.) Because he had reason to fear the wrath of God if he should be false: "Be not dismayed at their faces, so as to desert thy office, or shrink from the duty of it, lest I confound and dismay thee before them, lest I give thee up to thy faintheartedness." Those that consult their own credit, ease, and safety, more than their work and duty, are justly left of God to themselves, and to bring upon themselves the shame of their own cowardliness. Nay, lest I reckon with thee for thy faintheartedness, and break thee to pieces; so some read it. Therefore this prophet says (ch. xvii. 17), Lord, be not thou a terror to me. Note, The fear of God is the best antidote against the fear of man. Let us always be afraid of offending God, who after he has killed has power to cast into hell, and then we shall be in little danger of fearing the faces of men that can but kill the body, Luke xii. 4, 5. See Neh. iv. 14. It is better to have all the men in the world our enemies than God our enemy. (2.) Because he had no reason to fear the wrath of men if he were faithful; for the God whom he served would protect him, and bear him out, so that they should neither sink his spirits nor drive him off from his work, should neither stop his mouth nor take away his life, till he had finished his testimony, v. 18. This young stripling of a prophet is made by the power of God as an impregnable city, fortified with iron pillars and surrounded with walls of brass; he sallies out upon the enemy in reproofs and threatenings, and keeps them in awe. They set upon him on every side; the kings and princes batter him with their power, the priests thunder against him with their church-censures, and the people of the land shoot their arrows at him, even slanderous and bitter words; but he shall keep his ground and make his part good with them; he shall still be a curb upon them (v. 19): They shall fight against thee, but they shall not prevail to destroy thee, for I am with thee to deliver thee out of their hands; nor shall they prevail to defeat the word that God sends them by Jeremiah, nor to deliver themselves; it shall take hold of them, for God is against them to destroy them. Note, Those who are sure that they have God with them (as he is if they be with him) need not, ought not, to be afraid, whoever is against them.