Is there a God? · Question 5
Isn't believing in the Big Bang and evolution while talking about creation a contradiction?

A child asks: “But they say the universe came from the Big Bang and living things evolved.”
The answer: It is not a contradiction. Big Bang theory and evolutionary theory study how the universe and life have changed within nature. Saying “God created” is a confession of faith that this nature, these laws, and this life ultimately received their existence from God.
The Catholic Church does not teach that the Bible should be read as a science textbook. It respects well-established scientific research, and it does not make any particular scientific theory into a proof of God's existence. As scientific theories grow more accurate, the answer to “what process did nature go through?” changes, while the question “why does nature itself exist?” remains.
An analogy — two explanations of how bread is made
“The dough rose because of the yeast and baked in the oven's heat” and “Dad made bread for his family” are not fighting each other. One focuses on the process, the other on the maker and the purpose. This analogy cannot contain the whole mystery of creation either, but it shows that two explanations can be true together.
Briefly: “Science studies the processes inside creation, and faith confesses the source and purpose of everything that exists. You don't have to pick just one of the two.”