산상수훈, or the Sermon on the Mount, is a collection of teachings by 예수 found in the 신약성경, specifically in the book of 마태복음. It includes key principles of Christian ethics and spirituality, emphasizing love, humility, and compassion. The sermon covers various topics, such as the 팔복, which outlines the blessings for those who embody certain virtues. It also addresses issues like anger, lust, and the importance of forgiveness, encouraging followers to live a life of righteousness and to treat others with kindness.