Jesus Speaks with Unprecedented Authority

Jewish teachers reasoned from Scripture and inherited interpretation, and prophets characteristically grounded their messages in God's authority. Jesus' repeated first-person formula is therefore striking.

The Sermon should not be caricatured as Jesus contradicting Moses. Jesus explicitly says he has come not to abolish the Law and Prophets but to fulfill them. His authority is displayed in bringing their intention to its appointed fullness.

The Sinai covenant presents God's commandments as divine revelation mediated through Moses. Matthew's mountain setting and sustained treatment of Torah naturally invite comparison with Moses, while also presenting Jesus as more than another interpreter.

Deuteronomy anticipated a prophet like Moses whom Israel must hear, but Matthew's closing observation stresses that Jesus teaches unlike the scribes because his authority is inherent in his speech.

Across the antitheses Jesus cites commandments or received formulations and then declares, 'But I say to you.' He addresses murder and anger, adultery and lust, divorce, oaths, retaliation, and love of enemies.

At the sermon's conclusion the crowds are astonished because he teaches as one possessing authority. The force is cumulative: Jesus claims the right to state authoritatively what obedience to God's will truly requires.

Authoritative teaching alone does not prove deity; Moses and the prophets also spoke with divine commission. This record is therefore classified as supporting evidence.

Nevertheless, Jesus' personal authority over the interpretation and fulfillment of God's covenant instruction fits Matthew's larger portrait of one whose authority extends over Sabbath, sin, creation, judgment, heaven, and earth.

The crowds are astonished at Jesus' teaching because he teaches as one having authority and not as their scribes.