The way to witness to ANYONE is to simply present the plain truth of the Gospel of Jesus Christ to them. If a person doesn't want to be saved after having the simple Gospel, then they don't want to be saved.
There's no wisdom of words to convince the skeptic of the truth—the Gospel is what it is. If a man will not obey the simple Gospel, then he will not listen to the wisdom of words... "lest the cross of Christ should be made of none effect" (1st Corinthians 1:17).
I sometimes forget this Biblical principle and find myself arguing religion with people. To date, I have never known a religious person to come to Christ as a result of debating beliefs. But I have seen some religious people come to Christ right away when they heard the plain Gospel.
A person who wants to be saved WILL trust Christ immediately, you do not need to argue anything with them. A person who wants to DEBATE religion has already rejected Christ in their heart and is now defending their unbelief. Even if you prove them dead wrong with the Scriptures, they will still hold onto their unbelief (Mark 7:6-9; Luke 16:31).
There are people all over the world who want to argue religion. We do NOT need to debate with them; but rather, just keep giving them the simple Gospel of Jesus Christ. The POWER of God which brings salvation is the GOSPEL itself, and not our cleverly worded arguments.
There are billions of people in this world who have never heard the Gospel, many of whom would happily trust Christ; but we are too busy arguing religion with conceited fools. Oftentimes we erroneously think that if we could just word our presentation a little differently that perhaps we might be able to win a hardened unbeliever to the Lord.
God does NOT want us to try to win the lost using our own wisdom of words; but rather, with the plain Gospel of Jesus Christ. If they won't accept God's free gift of eternal life from just hearing the Gospel, then there is NOTHING we can say to make any difference...
"And he said, Nay, father Abraham: but if one went unto them from the dead, they will repent. And he said unto him, If they hear not Moses and the prophets [i.e., the Bible], neither will they be persuaded, though one rose from the dead" (Luke 16:30,31).
All we can do to get people saved is to express God's unconditional love for them by sharing the Gospel truth with them, pray for them, never give-up on them; but also, NOT get into heated futile debates that go in circles and waste precious time.
So I say to you my dear reader, let's focus on the Gospel itself, and let the power of God take control.
The Heart of the Matter...
To him who believes, no explanation is necessary; to him that believes not, no explanation is possible.
The Simple Gospel, 1
