Christians believe in revelation. We can learn some things about God through nature, but other attributes and truths about himself he has to choose to reveal. We believe he has so chosen.
You have read about his interacting in present-day people’s lives through providence. Those interventions are extraordinary and consistent with a loving and omnipotent Father. I’m sorry that you disbelieve their source. I am somewhat amazed that you disbelieve their source. The way the events Maggie’s and Rich Stearns’ lives were ordered makes your disbelief seem unreasonable, but maybe rather a choice?