What are the 5 discourses in Matthew represent?

There are five discourses that Matthew records in his Gospel. The Sermon on the Mount (5:1-7:29) The Commission and Instruction of the Twelve (9:35-11:1) Parables (13:1-52) Humility and Forgiveness among Jesus' Disciples (18:1-35) Denunciation of the Scribes and pharisees and the Olivet Discourse (23:1-25:46)