God created everything, including human beings. It didn't just happen, and God didn't create it and then leave events to happen on their own. Not only does He involve Himself in the smallest details of life, He also assigned us to work alongside Him in tending Creation. Remember that scientists who doubt God as Creator change their versions of creation almost every year, while God's version has never changed.
See Genesis 1:1 In the beginning God created the heavens and the earth.
