If I might step in,
Evolution as a whole is not random, although it contains random elements.
Mutation is random, although it operates within non-random physical laws.
Natural selection is very far from random. It is a continuing process where the successful survive and the unsuccessful disappear.
Going back to the topic at hand, I'm not sure what you are trying to accomplish here. It seems clear that Darwin's primary influence when developing his theory was the natural world that he studied on the Beagle voyage. Secondarily, he would have been influenced by the biologists who had gone before him, like Lamarck and Saint-Hilaire, as well as other thinkers and scientists, such as the geologist Charles Lyell. Compared to these factors, any influence that Darwin may have taken from the Bible pales into insignificance.
Even if we were to say that Darwin was influenced by Christianity, where does that get us? It would have been unthinkable for a man of Darwin's social class and education, living in England at that time, to have been unfamiliar with the Bible. It was omnipresent. The idea that Darwin's having been influenced by the Bible affects the credence accorded to evolution or the Bible itself, seems faintly absurd.
Mutate and Survive