ייִדישער מחשבֿה אויף ירמיהו 1:8

As the prophet wrote: "But the L-ord G-d helps me, therefore shall I not be confounded; therefore have I set my face like a flint, and I know that I shall not be ashamed" (Yeshaya 50:7), "Do not fear them or their words" (Yechezkel 2:6), "And you, son of man, fear them not, and fear not their words" (Yechezkel 2:6), "fear them not, neither shall you be intimidated by them" (Yechezkel 3:9).

The prophets must have had these two forces, courage and intuition, highly developed, and these were still more strengthened when they were under the influence of the Active Intellect. Their courage was so great that, e.g., Moses, with only a staff in his hand, dared to address a great king in his desire to deliver a nation from his service. He was not frightened or terrified, because he had been told, “I will be with thee” (Exod. 3:12). The prophets have not all the same degree of courage, but none of them have been entirely without it. Thus Jeremiah is told: “Be not afraid of them,” etc. (Jer. 1:8), and Ezekiel is exhorted, “Do not fear them or their word” (Ezek. 2:6). In the same manner, you find that all prophets possessed great courage. Again, through the excellence of their intuitive faculty, they could quickly foretell the future, but this excellence, as is well known, likewise admits of different degrees.