John Chrysostom — as excerpted in the Catena Aurea on Matthew 10:19-20

“Thus He raises them to the dignity of the Prophets, who have spoken by the Spirit of God. He who says here, Take no thought what ye shall speak, (1 Pet. 3:15.) has said in another place, Be ye always ready to give an answer to him that demandeth a reason of the hope that is in you. When it is a dispute among friends, we are commanded to be ready; but before the awful judgment, and the raging people, aid is ministered by Christ, that they may speak boldly and not be dismayed.”