Micah 1:5

For the transgression of Jacob [is] all this, and for the sins of the house of Israel. What [is] the transgression of Jacob? [is it] not (d) Samaria? and what [are] the high (e) places of Judah? [are they] not Jerusalem?

(d) Samaria, which should have been an example to all Israel of true religion and justice, was the dirty pool and the tank that all idolatry and corruption was kept alive in, and who prided themselves in their father Jacob, and boasted of him.

(e) That is, the idolatry and infection.