The Sermon on the Mount is a type of moral compass pointing the direction that God wants us to go.
The ruling priest class of the Jewish people in Jesus’ day, the scribes and Pharisees, were very rigid and severe.
They were very magisterial and they carried themselves with an appearance of superiority. They went about the streets condemning all about them, finding fault..
They were proud and conceited men who were self-righteous. Jesus’ reference to ‘judging’ would have been well understood as a reproof of their behavior.
He condemned the hypocrisy of those who fixate on the faults of others, while having grievous outstanding sins of their own that they have not reconciled with God concerning.
He cautions us to use wisdom in how and where we use our resources. These include our spiritual efforts, our physical strength, and our material assets.
Lord taught that we must exercise due diligence in seeking guidance, covering, and blessings; we must be persistent and not give out.
He assures us that we can be fully confident that God has both the ability and desire to nurture us and to protect us. So that we can put such concerns aside and focus our attention on those things that will lead to salvation.