What Scriptures do you use to convert people from Judaism to Christianity?
First and foremost, before you do anything else, pray. Make sure that your heart is right with God. I find it's easiest while witnessing to begin a conversation in the natural realm and then swing the conversation over to the spiritual. Follow the example of Jesus and His encounter with the woman at the well (John 4:4-16), for instance. He began in the natural realm, speaking to the woman about water, then He swung the conversation over to the spiritual. Jesus answered and said to her, “
Whoever drinks of this water will thirst again, but whoever drinks of the water that I shall give him will never thirst. But the water that I shall give him will become in him a fountain of water springing up into everlasting life” (John 4:13-14). Secondly, take the person through the Law of God, which are the Ten Commandments (Exodus 20:1-17), thus showing him the standard of God requires of us. Remember the function of God's Law (1 Timothy 1:8-11) is to bring the knowledge of sin (Romans 3:20) and to stop every mouth of self-justification (Romans 3:19). The Apostle Paul said, "I had not known sin, but by the law (Romans 7:7). The Law is a schoolmaster to lead people to Christ, so that they may be justified by faith (Galatians 3:24).
If the Law of God is used properly, it will strip away the person of their self-righteousness and show them their dire need for the Savior. And once the stony ground of an unrepentant heart has been furrowed fully by the strong plow of the Law, the seed of the Gospel can be planted. Start your conversation in the natural realm and then turn it to the spiritual. After you have done this, then take the person through three or four of the Ten Commandments. For example: (1) Have you ever told a lie? What do you call a person who tells lies? (2) Have you ever taken anything that didn't belong to you (no matter the value)? What do you call a person who steals? (3) Jesus said, "
Whoever looks at a woman to lust for her has already committed adultery with her in his heart" (Matthew 5:28). Have you ever looked with lust? If you have, then you are an adulterer at heart. That's three of the Ten Commandments...This kind of witnessing is called Biblical Evangelism and it is taught by Ray Comfort and Kirk Cameron, of the
Living Waters/
The Way of the Master ministry. There is a plethora of information and resources on these two sites and there is also a plethora of their videos on YouTube as well. FYI, I personally use this method of evangelism and I know it works.
Here's an evangelism video, by Ray Comfort, that I believe will help you.
Witness Differently to Jewish People? #428 - YouTube