They were astonished

The incident of the rejection of Jesus at Nazareth comes after the Sermon on the Mount and provides a contrast to it.

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Whereas the crowds were in admiring astonishment at Jesus’ teaching (Mt 7:28), here astonishment takes the form of offense.

Matthew mollifies a bit his Markan source: Jesus is referred to as “the carpenter’s son” instead of as the carpenter, and Matthew omits “and among his own kin” (Mk 6:1-6). But the offense remains, and in the face of the people’s lack of faith Jesus does not work many mighty deeds.

Familiarity with Jesus’ background and family leads Jesus’ townsmen to regard him as pretentious.