He was not addressing non Christians, so you actually took the verse out of context and misused it. He was addressing those that grace had already been applied to because of their faith in Jesus Christ. He was not addressing unbelievers like you.
Pastor Jack Howell
"Some bring God's curse on them by marking off part of the Bible, calling it erroneous, uninspired, less than the very Word of God."
- Dr. John R. Rice
"For I am not ashamed of the gospel of Christ: for it is the power of God to salvation to every one that believes; to the Jew first, and also to the Greek."
Proper Principles of Bible Study