I also like the warning against presumption in the article.
It shows a complete lack of faith on the part of the Catholic in the promises of Christ.
24Truly, truly, I say to you, he who hears My word, and believes Him who sent Me, has eternal life, and does not come into judgment, but has passed out of death into life. John 5:24 NASB
Mark?
1 John 5:13
I have written these things to you who believe in the name of the Son of God so that you may know that you have eternal life.