Question
What is the Sermon on the Mount? (Jesus' great teaching in Matthew 5–7)
Analysis
A portrait of kingdom life
The Sermon isn't a checklist of new rules so much as a portrait of the character God's kingdom produces. It opens with the Beatitudes, blessing the poor in spirit, the mourners, the meek, and the merciful (Matthew 5:3–Matthew 5:9), an upside-down picture of who is truly blessed. Jesus then calls His followers 'salt of the earth' and 'light of the world' (Matthew 5:13; Matthew 5:14), meant to influence the world around them. Repeatedly He goes beneath the letter of the Law to the heart: not just 'don't murder' but don't nurse contempt; not just 'don't commit adultery' but guard the heart; not revenge but 'love your enemies and pray for those who persecute you' (Matthew 5:44). The standard is high, 'Be perfect, therefore, as your heavenly Father is perfect' (BSB, Matthew 5:48), which drives the hearer to grace, not self-congratulation.
Prayer, priorities, and the two foundations
In chapter 6 Jesus targets motives: give, pray, and fast for God's eyes, not for human applause (Matthew 6:1–Matthew 6:18), and He gives the model prayer, the Lord's Prayer (Matthew 6:9–Matthew 6:13). He warns you 'cannot serve both God and money' (BSB) and urges, instead of anxiety, 'seek first the kingdom of God and his righteousness' (Matthew 6:24; Matthew 6:33). Chapter 7 closes with sharp choices, don't judge hypocritically, keep asking and seeking (Matthew 7:7), do to others what you'd have them do to you (the Golden Rule, Matthew 7:12), enter by the narrow gate, and a tree is known by its fruit. The finale is the two builders: the one who hears these words and does them builds on rock, and the one who doesn't builds on sand (Matthew 7:24–Matthew 7:27). (Luke records a shorter parallel, the 'Sermon on the Plain,' Luke 6:20–Luke 6:49.)