Matthew Henry commentary on 19&20

<p>Be ye harmless as doves. Not only, do nobody any hurt, but bear nobody any ill-will. Prudent care there must be, but not an anxious, perplexing thought; let this care be cast upon God. The disciples of Christ must think more how to do well, than how to speak well. In case of great peril, the disciples of Christ may go out of the way of danger, though they must not go out of the way of duty. No sinful, unlawful means may be used to escape; for then it is not a door of God's opening. The fear of man brings a snare, a perplexing snare, that disturbs our peace; an entangling snare, by which we are drawn into sin; and, therefore, it must be striven and prayed against. Tribulation, distress, and persecution cannot take away God's love to them, or theirs to him. Fear Him, who is able to destroy both soul and body in hell.</p>