They are all adulterers. They are burning like an oven that the baker stops stirring, From the kneading of the dough, until it is leavened.
Some stress the baker's part in this metaphor who knows how to control the fire until the appropriate time to use it, with the meaning that Israel's leaders skillfully used their evil passions by plotting intrigues and other evil deeds, controlling them until exactly the right time for the indulgence of their wickedness.  Those following this line usually see reference in this passage to the repeated revolutions of that period during which several kings were overthrown.  We prefer the former view.