Has science demonstrated that there is no God — or at least no evidence for God? Given the current wave of “New Atheism,” arguing that everything can be explained without recourse to a Creator, it’s important that Christians of all kinds take time to learn why we believe in God.
Catholics believe that while God has revealed himself most fully in his Son, our Lord Jesus Christ, who is “the image of God’s glory and the exact representation of his being” (Hebrews 1:3) and therefore that to understand who God is and what his intentions are, we need to look primarily to Scripture and the teaching of the Church, we also believe that God has revealed himself through his created works (Romans 1:20) and can be known through the use of reason.
It’s important that we learn to defend our belief in God in ways that will be meaningful to those who don’t share our faith in Scripture or the Church — especially as our society becomes more secular. And this is something that we can do. We need not sink into silence in the face of atheist claims. As St. Peter wrote to the earliest believers: “Set apart Christ as Lord in your hearts and always be ready to give an answer to anyone who asks you to give a reason for the hope that is in you, but do it with gentleness and reverence” (I Peter 3:15).
Hear Our Stories
Here are a collection of testimonies from former atheists who came to believe in God and entered the Catholic Church.
Browse Our Resources
There are many, many great resources available for learning about God and God’s existence. Here are some of our favorites.
Recommended Article Series
How I Evangelize those who Doubt or Deny the Existence of God
“I look at my atheist friend, and I see that he possesses a great deal of what I possess, as one who believes in God and in our creation in God’s image and likeness. He believes in moral absolutes. He’s committed to the equal worth and dignity of every person. He believes in the inalienable right to life, liberty and the pursuit of happiness. He’s got meaning and purpose. He believes in freedom and moral accountability. He’s got the very same cattle in his corral that I’ve got in mine! And he lives each day as though all of this naturally belonged to him.
“But for the life of him, he cannot account for how he came to possess these cattle on the basis of what he says is true about the universe in which he lives. If his materialist worldview were really true, his corrals would be quite empty.
“So how did he come to possess this beautiful herd of cattle? In short, he has borrowed them from a worldview that can account for them and make sense of them. In short, he is living on borrowed capital.”
Recommended Recorded Series
with Patrick Coffin
In this series Catholic Answers Live radio host Patrick Coffin conducts captivating interviews with three of the best in their respective fields when it comes to refuting atheist claims: Dr. William Lane Craig (philosophy), ex-atheist Jennifer Fulwiler (dealing with family members), and Fr. Robert Spitzer, S.J. (modern physics).
by Ken Hensley
Can the atheist live with the implications of his viewpoint? In this series, Ken Hensley offers a powerful method of evangelism as he explains the many ways the atheist’s “naturalist” worldview leads to the destruction of everything he holds meaningful: morality, human dignity and rights, meaning, and even knowledge. Listen and learn.
by Fr. Robert Spitzer, S.J.
In this talk, Fr. Spitzer — an expert in physics, philosophy, and theology – explains how the voice of science and our ordered universe clearly testify to the existence of an all-powerful God. Today, it is more important than ever that we understand this.
by Jennifer Fulwiler
Jennifer Fulwiler told herself she was happy. Why wouldn’t she be? She made good money as a programmer at a hot tech start-up, had just married a guy with a stack of Ivy League degrees, and lived in a twenty-first-floor condo where she could sip sauvignon blanc while watching the sun set behind the hills of Austin. Raised in a happy, atheist home, Jennifer had the freedom to think for herself and play by her own rules. Yet a creeping darkness followed her all of her life…
by Joseph Pierce
Race with the Devil is one man’s incredible journey from atheism to Christ, but it is also much more. It is a testament to God’s hand active among us and the infinite grace that Christ pours out on his people, showing that we can all turn—or return—to Christ and His Church.
Forward by Marcus Grodi
This collection of testimonies by former atheists who’ve found new life in the Catholic Church is one of the most potent weapons for the Faith ever crafted! These authors don’t just tell their stories — they also give you an insider’s view of the fatal weaknesses of atheist thinking that lead people to deny the existence of God. Dramatic and thought-provoking, these intensely personal stories explain virtually every objection that atheists have to God – as well as the arguments that eventually led them into the Catholic Church.
by C.S. Lewis
This book is probably the classic work of its kind in the world. In a beautifully simple and even conversational style, Lewis makes the case for God’s existence and the truth of Christianity. It will also introduce you to one of the greatest Christian thinkers of the 20th century. After this, you’ll want to read everything Lewis wrote.
by Trent Horn
A great place to start learning the reasonable and common sense arguments for God’s existence and also how you might charitably share those arguments with those who do not believe. The book is written in a style that makes it good for skeptics and seekers, too
by Anthony Flew
Here, the most well-known philosophical atheist of the second half of the 20th century tells the story of how he came to believe in God. This is an amazing look into how a brilliant philosopher realized over time that this universe could not be explained in purely physical terms and apart from a Creator.