Have you ever wanted to "teach" the Gospel of Grace to someone brand new? Here is a simple suggestion which is very easy and effective. I use a jumbo brass paper clip. I ask them if they would like me to show them how this paper clip is like a key that could help them understand their Bible.
Delay the explanation by patiently waiting for the right "teaching moment." You should be alone with them and free from distraction. They should have their own Bible. (Don’t argue over their Bible translation yet. You may want to have your KJV available. I have seen people walk away by beginning with an argument over the version. Teaching is a process. Let’s get them saved first.)
Take their Bible and apply the paper clip to the books from Romans to Philemon joining them together. That's it. Now, with their Bible still open you show them the last verse of that first portion which is Acts 28. With their Bible now divided into three parts, I tell them this first part was written to Israel. I read verse 28:28.
Be it known therefore unto you, that the salvation of God is sent unto the Gentiles, and that they will hear it.
I tell them that this middle portion are all the letters written by the Apostle Paul who was the Apostle to the Gentiles. I say, “You’re a Gentile, right?” (You may need to explain that there are Jews and non-Jews. The non-Jews are Gentiles.) These letters were written to you as a Gentile. We are currently in what is called the Age of Grace which ends with the Rapture. It happens just before the Tribulation starts. I ask them if they have heard of the Tribulation and tell them those who are saved by grace during the Age of Grace will not go through the Tribulation. Is that something which they would be interested in hearing more.
Finally, I show them the last part. The first book of the last portion is the book of Hebrews. I tell them this portion was written to the Jews who will have to go through the seven years of the Tribulation. Notice it begins with the book of Hebrews!
There is much that could be said, but for a new person it is best to not overwhelm. If they get this lesson down and understand it, then you may wish to ask if they believe that Jesus Christ was crucified, buried, and He rose again. Let them know Paul’s message tells us salvation comes by believing that Jesus Christ did all this for us. There is nothing we must do to be saved. We must believe this to be saved. I would suggest you end by having them read two short verses which will confirm what you told them. Direct them to Ephesians 2:8-9.
For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast.
Sometimes, I ask them to do word substitutions. I ask them to replace the word “grace” with “a gift.” Replace the word “faith” with “believing God’s Word” and finally the words “of works” with “having to do anything.” It would look like this:
For by [a gift] are ye saved through [believing God’s Word]; and that not of yourselves: it is the gift of God: Not [having to do anything], lest any man should boast.
In my personal opinion, it may be most advantageous to summarize what has been said and end it. Saying more may be an undoing. You have presented the critical information and they will need to think about it. Therefore, do not overwhelm. The hardest lesson I learned as an insurance salesperson is, “Once they’ve bought it, shut up!” As ambassadors of grace, we only present the information and it is the Holy Spirit who affects the change! God bless your endeavors!