Answer:
Scout goes through a phase, she frequently swears and because she knows that adults consider it wrong she mistakenly believes that this bad behavior will keep her out of school.
Atticus hopes that if he ignores it, she will learn to stop because her belief will be proven wrong. Although her uncle Jack disapproves of it, he tries to reprimands her, it takes her a while to understand that she needs to stop.
The Bible forbids that people should not take the Lord's name in vain, and no corrupting talk shall come out of their mouths. "Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear." Ephesians 4:29
Explanation:
In To Kill a Mockingbird, chapter 9, Scout goes through a phase where she frequently swears. Knowing that adults consider it wrong, she mistakenly believes that this bad behavior will keep her out of school. Atticus tolerates her conduct because he believes that if he ignores it, she will stop. Her uncle Jack disapproves and reprimands her. In the Bible, the Third Commandment forbids taking the Lord’s name in vain, and numerous passage discourage swearing oaths.
(The link I got it from https://www.enotes.com/homework-help/using-to-kill-a-mockingbird-and-the-bible-compare-2770716)
Hope this helps other people since it took so long for someone to answer your question. Good luck!