The Sermon on the Mount is arguably the most important sermon ever given. In it, Jesus lays out his radical ethical and moral vision.
To understand what Jesus is doing in this sermon, it may help to look at how children are raised. When a baby first receives instruction, it tends to be about “no!” Don’t touch that, don’t put that in your mouth, don’t go there.” As time passes and children grow, the boundaries change and get more complicated – “Do your homework, no more screen time, be home by 10.” But at some point we want these things to change – we want our children to move out and have their own lives, their own identities, making their own decisions and setting their own boundaries.
Similarly, when the United States became a nation, the Constitution was put in place to create a framework for running the national, Federal government, enabling the creation of laws, the interpretation of laws and even the amending of the constitution itself. But it does not give instruction for every situation and is not meant to be.
When Jesus climbs up to the top of a hill to teach, it evokes Moses bringing the law down from Mount Sinai and the prophets of the Old Testament. Jesus is bringing a new word, a new manifesto for the Kingdom of God. The emphasis becomes humanity internalizing the desires of God rather than acting from external instruction from the Law. The movement is from the law written in stone to the law written in our hearts. Jesus instructs us to take the principles set forth in the law and to understand those well enough to apply them in our lives to live as God’s people.
The Sermon on the Mount is a radical reinterpretation of the Mosaic law, and a radical restatement of it. Jesus’ focus is on the heart of the matter, where the law has focused on the external behavior. In many ways, it is even more extreme, but it is also designed to enable us to adapt to new questions and new situations.
As we grow from a baby to a teenager to an adult, our questions grow from what we’re going to touch or not touch, into hard questions of how we respond to sin in ourselves, to corruption in the world, to complex relationships.
Following the Sermon on the Mount means moving from scripted moral answers to moral improv. It means internalizing the will and desires of God to the extent that we respond to those difficult questions in a godly way. It’s a message from Jesus “you’re not babies anymore.”
Maturity is a challenge, and many of us long for the simpler, easier answers from when we were young. But Jesus calls us to something greater and over the next few weeks we will dig into how He does that in the Sermon on the Mount.
— Sermon Notes, Dave Sim, Renew Church, Lynnwood WA, January 5, 2025