Sermon on the Mount is an Introduction to the Kingdom of God.
Kingdoms have rules for conduct to operate correctly.
Sadducees, Scribes, Pharisees and Rabbis had been misinterpreting Gods laws for years and Jesus came to give them His Interpretation to help them understand the Purpose, Principles, & Precepts of the Laws of God - They loved the letter of the law, Jesus came to show them the heart of it!
The Sermon on the Mount is the Counter Cultural Principles of the Kingdom of God. We are living in a day that thinks differently that its creator. We are living in a day the pleasure is supreme and yet happiness is fleeting. The Sermon on the Mount and the Beatitudes help us find the genuine happiness of the God’s Kingdom.