Here is an excerpt:
Some years ago, while engaged in pastoral ministry in New England, I had an interesting conversation with an elderly Roman Catholic lady. Somewhat spontaneously we found ourselves talking about whether one could know if he or she was saved. This lady noted that it was not possible to know whether one was saved. As a young and rather inexperienced pastor I jumped in and argued that to the contrary, the Scriptures indicated that an individual could know that he or she was saved. I took my friend to 1 John 5:13, “I write these things to you who believe in the name of the Son of God that you may know that you have eternal life.” And I took her to Romans 10:9-13:If you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved. For with the heart one believes and is justified, and with the mouth one confesses and is saved. For the Scripture says, ‘Everyone who believes in him will not be put to shame.’ For there is no distinction between Jew and Greek; for the same Lord is Lord of all, bestowing his riches on all who call on him. For ‘everyone who calls on the name of the Lord will be saved.