After the trial how do the children and Atticus respond to Bob Ewell's threats?

Scout and Jem are afraid of Tom Ewell. They are also afraid that Tom will do something to Atticus. Indeed Bob Ewell spitting on their father did not help. Atticus responds in the rational and introspective way that we have come to expect from Atticus. He explains that Bob Ewell feels humiliated. The only power he felt that he ever had was in accusing Tom Robinson of raping his daughter. Even though the jury found Tom guilty, they knew the truth. Infact the whole town knew the truth and Bob became even more of a social pariah Atticus felt that Bob needed to scare children to feel some kind of revenge, he felt that it was more bark than bite.