While in previous episodes, Tim Roth was credited as Jim Worth, from this episode onward he was credited as Jack Worth. Jack is the darker side of Jim from the past.
The Ammonites were a pagan people in the Bible, descendants of Lot, Abraham's nephew. The name was probably created by combining the names of the Mennonites and the Amish, which the community in the series resemble.
In reciting the Apostles Creed with Anna, Jonah inexplicably skips the sentence, "On the third day, he rose again."
Due to splitting the Premiere into 2 episodes, this is Episode 3 on Amazon.