I used to put this on a business card and hand it to them (I got it from an apologetics source that I can no longer remember) …
On the front of the card …
**ARE YOU SAVED?
“Are you saved?” asks the Fundamentalist. The Catholic should reply: “As the Bible says, I am already saved (Rom. 8:24, Eph. 2:5–8), but I’m also being saved (1 Cor. 1:8, 2 Cor. 2:15, Phil. 2:12), and I have the hope that I *will be *saved (Rom. 5:9–10, 1 Cor. 3:12–15). Like the apostle Paul I am working out my salvation in fear and trembling (Phil. 2:12), with hopeful confidence in the promises of Christ (Rom. 5:2, 2 Tim. 2:11–13).”
On the back of the card …
Hope for Salvation … Not Assurance of Salvation:
Mt 7:21 - not everyone saying “Lord, Lord” will inherit
Heb 10:26 - if sin after receiving truth, judgement remains
1 Cor 9:27 - buffet body, make it a slave for fear of being rejected
Rom 2:26 - will award to every man what his acts have deserved
Rom 11:22 - importance of continuing in God’s grace
Mt 24:13 - those who persevere to the end will be saved
Phil 2:12 - work to earn your salvation in anxious fear
1 Cor 10:11-12 - those thinking they are secure may fall
Gal 5:4 - separated from Christ, you’ve fallen from grace
2 Tim 2:11-13 - must hold out to end to reign with Christ
Heb 6:4-6 - describes sharers in Holy Spirit who then fall away
2 Cor 5:10 - we reap what we earn according to our deeds
Rom 5:2, 8:24 - confident in the hope of attaining glory of God**