On a Sabbath the disciples pick heads of grain and eat them, and some Pharisees criticize them. Jesus recalls that David ate the bread of the presence when he was hungry, and declares that the Son of Man is Lord of the Sabbath. On another Sabbath, in the synagogue, there is a man with a withered hand. While the teachers of the law watch him, Jesus tells the man to stretch out his hand and heals him, asking whether it is lawful on the Sabbath to do good or harm, to save a life or destroy it. They are filled with fury.
Jesus spends the night praying on the mountain and in the morning chooses twelve, whom he names apostles: Simon, whom he calls Peter, Andrew, James, John, Philip, Bartholomew, Matthew, Thomas, James son of Alphaeus, Simon the Zealot, Judas son of James and Judas Iscariot, who became the traitor. On a level place, crowds come to hear him and be healed, and Jesus teaches. He declares blessed the poor, the hungry, those who weep and those who are persecuted, and pronounces woes on the rich, the full, those who laugh and those whom everyone praises.
He then commands love for enemies, blessing those who curse, giving without expecting return and treating others as one wants to be treated. He asks us to be merciful as the Father is merciful, not to judge or condemn, and to forgive. He warns against removing the speck from another's eye with a log in one's own, and teaches that a tree is known by its fruit. He ends with the parable of the man who builds on rock, in contrast to the one who builds with no foundation.