Start with this observation from the Bible, in the book of Romans, chapter 1, and verses 18 to 20:
"But God shows his anger from heaven against all sinful, wicked people who suppress the truth by their wickedness. They know the truth about God because he has made it obvious to them. For ever since the world was created, people have seen the earth and sky. Through everything God made, they can clearly see his invisible qualities—his eternal power and divine nature. So they have no excuse for not knowing God." (New Living Translation)
The indication here is that each person is created, perhaps instinctively, with the knowledge that God exists. The complexity of a single cell, the vastness of the universe, the very existence of life on this planet all point to such a conclusion. As an illustration, suppose you were walking through a field and noticed a watch lying on the ground. As you pick it up and examine it, you're not likely to be wondering if it evolved or about its purpose, because there is evidence of design and the creator / manufacturer will most likely be indicated either on the face of the watch or on the back.