The Son of God card has been a staple for nearly all decks since the C and D starter decks. It can be found nearly every booster pack series, and was released with greek script in the E and F starter decks. A rule change in the 4th edition rule book bans a player from using son of god on their own lost soul.
Son of God is almost essential in all decks in the game of redemption, being able to be used for lost souls that can not be obtained through normel means.
When paired with the New Jerusalem card, Son of God becomes a deadly card for your opponent, as they could easliy rescue two lost souls. The trick is getting them both at the same time.