according to the bible, the sermon on the mount was a speech that jesus of nazareth gave to his followers and a large group of people around ad 30. jesus gave the speech on the side of a mountain. the most popular part of the speech is the beatitudes, which are at the beginning. the sermon also contains the lord's prayer. other popular lines from the sermon on the mount are "turn the other cheek," "salt of the earth," "light of the world," and "judge not, that ye be not judged."