Matthew 10:19 - Ellicott's Commentary On The Whole Bible

Take no thought. — In the same sense as in Matthew 6:25, “Do not at that moment be over-anxious.” The words indicate an almost tender sympathy with the feelings of Galilean disciples, “unlearned and ignorant men,” standing before those who were counted so much their superiors in power and knowledge. The words that follow contain a two-fold promise: not only what they should say, but how, in what form and phrase, to say it, should be given them in that hour. The courage of Peter and John before the Sanhedrin is at once the earliest and the most striking instance of the fulfilment of the promise (Acts 4:13).