When I was a new Christian, I found that many of the people at my church saw the idea of the big bang as being an enemy of Christianity. Nothing can be further from the truth. Many who are opposed to the concept of God struggle with the big bang because it requires a beginning of the universe, which opens the door to a cause for the universe.
In this video, William Lane Craig looks at the concept of the big bang and cosmology in general. If you want to learn more, I recommend Craig’s Reasonable Faith page.