The Nazi Party charter, point 24: "The Party as such advocates the standpoint of a positive Christianity without binding itself confessionally to any one denomination". Their charter does go on to demand religious freedom for religions that do not offend the morality of the German people (Christian morality).
The dominance of Christianity was so profound in the Nazi party that the Potsdam Church was (is) a well known symbol for the Nazi party. The first series of Nazi minted silver coins (1933) featured the Potsdam Church on the obverse side of the 5 Mark silver coin and Martin Luther on the obverse side of the 2 Mark silver coin.
Prior to WWI, with a few regional exceptions, being a Christian was a requirement for German citizenship. A person could simply not be a German citizen unless they proclaimed devotion to an approved Christian sect. Not long after Jews were allowed to become German citizens on a national scale, WWI broke out. Thus, when Germany lost the war, it was a common Nazi Party claim that "Jewish treachery" was responsible.