How does Harper Lee use allusion in To kill a MockingBird

Harper Lee uses a biblical illusion in to kill a mockingbird to both foreshadow and to illude to to how Atticus is like Jesus, that he is doing nothing wrong and having to sacrifice himself for others, and the people that are killing him in this case is the jury and citizens of maycomb, the head judge is god and he has sent his favourite “son” to be sacrificed the quote is “let this cup pass from you eh”