He often spoke of Providence, not Yahweh. Appealing to the church was necessary (meanwhile the churches were against him and most the biggest traitors were devout Christians).
"What motivated the plot leaders?
Interestingly, the common dissatisfaction noted in the most determined and central of the plotters was on religious and moral grounds. These men took their faith more seriously than the average and saw the actions against Poland and the Jews in particular as unacceptable to them personally and to Germany as a Christian nation. They were not particularly representative of Germans as a whole.
Their secondary objection was the harm caused to Germany's reputation in the rest of the world, and especially they wanted to work with the Allies, not against them—somehow imagining that it was possible even after all the statements by Churchill and Roosevelt that, Nazis or no Nazis, Germany had to go. It was the Germans themselves those leaders objected to! But these men could not see that—their opinion of themselves was so high and they were so convinced that only Hitler was the problem."
https://carolynyeager.net/75th-anniversary-failed-july-20-assassination-attempt-adolf-hitler