When Jesus spoke to the Jewish people in the synagogue, they reacted in anger.
28 When they heard this, the people in the synagogue were furious.29 Jumping up, they mobbed him and forced him to the edge of the hill on which the town was built. They intended to push him over the cliff,30 but he passed right through the crowd and went on his way. Luke 4: 28-30.
What had them so furious was that Jesus was pointing out God had a long history of moving beyond the chosen people to show his mercy and grace, his salvation and deliverance, were intended for all people, not with just the Jewish people. Israel was not chosen by God as a reward; it was a commission to bless the rest of the world in God's name and with God's power.
And as far as his people were concerned, he was just a “hometown boy”.