Why do you think U.S money says In God We Trust?

We all use U.S dollars and we look at it deeply time to time and read (In God We Trust) and find all the owls and or spiders hidden in a dollar bill but each coin and dollar bills have the same wording-(In God We Trust) Why? Its not that I don’t believe and or don’t trust God, because I do Trust but honestly daily my action doesn’t seem like it but someone always comes along to remind me to keep pressing forward and trust God.