The motif of Judeo-Christian references

While watching The Godfather, Judeo-Christian references are evident and come in visual and oral forms and this is not surprising considering it was made in the 1970s when religion played a large role in society. The first occurrence was at the very beginning of the movie when Vito Corleone was sitting in his chair in his office and the the light shining through the window formed a halo around him. At first, it sounded like a big stretch but as the movie went on, other instances came up and it started to make sense. Examples are when Vito Corleone was shot 5 times but still survived, just like Jesus was stabbed 5 times but came back to life and were as simple as when Michael said 'Jesus Christ' when he was upset. These subtle hints all point back to the Bible. I am not sure why Francis Coppella chose to do this, but I will keep paying attention for more Judeo-Christian references in hope of finding my answer.