Jem thinks he and scout are in trouble for being on the balcony during Tom's case
Jem thinks that Atticus is calling them to come inside for the night, as he does not want them to stay out late and get into trouble. Jem also respects Atticus's authority and knows that they should listen to him.
Jem calls out to Atticus that the phone was ringing because Atticus was outside and couldn't hear it, so Jem wanted to make sure Atticus didn't miss an important call. Jem's action shows his concern and thoughtfulness towards his father.
why do you think jem confessed to atticus about the childrens activites regarding boo radley
Jem is impressed with Atticus and he responds by saying that Atticus is a gentleman like him. Jem is Atticus' son in To Kill A Mockingbird.
Atticus is walking out of the court room and all the black people that are on the balcony stand, Rev. tells Jem and Scout to stand up because theyr father was leaving the court room.
Calpurnia (the Finches' housekeeper) brings a note telling Atticus that Scout and Jem are missing. Soon after, however, Mr. Underwood tells Atticus that the children are in the courtroom in the colored balcony.
Its when Jem builds the snowman and replicates Mr Avery. Then Atticus says that to him. I think its because Jem has showed signs in the past that he wants to do what Atticus does; law, not sure about engineer and portrait painter as Jem has shown that he is artistic when he builds the snowman. Actually I think he says engineer as its something completely different from the other 2 jobs he mentions, which exaggerates the diversity of Jem's future.
Atticus doesnt have many flaws but atticus lies to jem and blames jem for killing bob ewell.
Atticus calls sheriff Heck Tate because he knows that Heck is the only one skilled enough to shoot the mad dog safely without endangering the community. He trusts Heck's expertise with a gun and knows he can handle the situation effectively.
The people in the balcony stand up when Atticus is leaving the courtroom. They stand to show him their respect. Scout and Jem haven't yet understood this; the Reverend tells them to stand, too.
Atticus is Jem and Scout's father.
When Jem looks up to Atticus and knows that he is a gentleman, and finds out that Atticus is very good at shooting birds. That is one of Atticus's talents, so then Jem sees what kind of a gentleman Atticus really is.