A sign outside of Astoria Holy Witness Church in 'The Abducted' says "He That Enters Here Shall Be SAVED!". The bond formed between Olivia and Alt Broyles while working this case is ultimately what saves Olivia from death and allows her to return to her universe in 'Entrada'.
WALTER: "It's all because of that temptress. She tricked my son with her carnal manipulations and he fell right into her vagenda."