I was an evangelical Christian for over 40 years before coming into the Catholic Church.
I would have answered this question with verses from I John
I John 2: 3 “By this we know that we have come to know Him, if we keep His commandments.”
I John 2: 6 “the one who says he abides in him ought himself to walk in the same manner as He walked.”
I John 3: 9 “No one who is born of God practices sin…”
I John 4: 7 “Beloved, let us love one another, for love is from God and every one who loves is born of God and knows God.”
I John 4: 20 “If someone says, I Love God, and hates his brother, he is a liar a,d the one who does not love his brother whom he has seen cannot love God whom he has not seen…”
I John 5: 13 “These things I have written to you who believe in the name of the Son of God in order that you may know that you have eternal life…”
That’s how I would have answered the question. The problem is, I would be the one determining whether I keep His commandments, walk like Jesus walked, practice sin, and love my brothers."
How can anyone make that judgement about themselves?! After all, if I answer no to any of the above questions, I’m going to hell. So of course I would answer yes.
I almost started crying just now as I wrote out the verses about loving your brothers. All my life I was in evangelical churches that, for the most part, practiced brotherly love. I felt very safe and secure in these churches. I had friends of all ages. I trusted my little girls with people from these churches for a week at a time (while I went to a wedding with my husband). I loved these people, too.
THEN we moved and joined and Evangelical Free Church and I discovered that not all Christians practice love toward one another. These people were hateful, evil. Eventually a woman pastor in the church told lies about us and we were kicked out of the church.
They treated my daughters like cat poop.
And they used the Bible, the SOLE AUTHORITY from God, to justify their heinous, evil treatment of us.
That’s when I stopped believing in the doctrine of sola Scriptura. It simply doesn’t work.
If I DO believe in sola Scriptura, then I am forced to believe, with the authority of Scriptures to back me up, that those people did NOT have “saving faith” because they did NOT practice love, and therefore, they are deceiving themselves about their “salvation” and they are going to hell.
I believe God is merciful.