How can I compare the extra biblical parallels to John 4? I own A Harmony of the Gospels (A.T. Robinson). I do not think the harmony will be the thing I need unless there is a harmony of extra biblical references for John's Gospel. There might be an index for extra biblical references. I know Text Comparison is not the thing I needed because it shows differences between the various English translations. I know there is an abundance of Samaritans being referenced in extra biblical literature. I know these cross references to the biblical literature. John 4:5: Genesis 23:19; Genesis 48:12; Joshua 14:13. John 4:18: 2 Kings 17:24.