Here's the story of Fr. Steven Scheier as told to Mother Angelica on EWTN.
The video plays for just over 40 minutes, but it's well worth watching. The story reinforces the knowledge that God's mercy is so wide, broad, and deep in scope that if you are still an atheist or not a true believer and keep going your own way and end up at the wrong destination, you have only yourself to blame. God has bent forwards, backwards, and sideways, to the point of sacrificing his own beloved Son to save us, exactly what more do you expect him to do?
One last thought. People will pay to buy a lottery ticket, hoping to gain financial security in this life when the odds of winning are so slim that you're more likely to be killed by lightning, yet they are not willing to accept the free mercy offered by God to win eternal life. You figure that out.