2 Peter 2:19-ff Once Saved Always Saved?

It's hard for anyone who knows Jesus to believe someone who knows God's grace first-hand would ever walk away from Christ. It just feels wrong to even consider that might be a possibility. The question remains: What does the Bible actually say - however we feel about it? Dare to journey through this part of Peter's letters, & learn from it & other supportive texts. Find out if there is "Eternal Security," or if instead, there is free will...