1. Because God Commands It
Soulwinning is not an option. It is not a spiritual gift. It is not a church growth program. It is a clear, unequivocal, unavoidable command of God.

2. Because There Is a Hell
Psalm 9:17 still says, “The wicked shall be turned into Hell and all the nations that forget God.” Revelation 21:8 still says those without Christ will have their part in the lake that burns with fire and brimstone.

3. Because We Know How To Escape Hell
Imagine a man having a cure for cancer and keeping the news to himself. Imagine seeing someone about to be run over by a car and not trying to warn him. How much worse it is for those of us who know the only escape from eternal damnation to keep it from those desperately in need of this truth.

4. Because Soulwinning Is the Decent Thing To Do
1 Corinthians 15:34 says: “Awake to righteousness and sin not; for some have not the knowledge of God: I speak this to your shame.” I once heard of a preacher who, along with his family, befriended an elderly lady. She became a kind of a grandmother to his children and was included in family gatherings. After a while, their friendship had advanced so far that he felt awkward about giving her the Gospel; wished he had done it sooner, but did not know exactly how to broach the subject. Years went by. One day the preacher was under such deep conviction that he went over to the lady’s house and clearly explained the Gospel. She was very quiet when he ended. She said, “Are you telling me that you believe that if I died right now, I’d go to Hell because I’ve never trusted Christ?” 
12 Reasons Every Christian Should Win Souls
5. Because There Is a Heaven 
What a wonderful blessing it will be to be reunited with loved ones for eternity. What a privilege it will be for us to see those living forever in Heaven, to whom we have given the Gospel of Christ.

6. Because It Glorifies God
John 15:8 says:“Herein is my Father glorified, that ye bear much fruit; so shall ye be my disciples.” There are those who say that our prime motivation is not to win people to Christ but to glorify God. I do not disagree with them, but I must remind them that the Bible clearly says God is glorified when we bring forth much fruit.

7. Because It Encourages Believers
When I win people to Christ, bring them to church, or share their testimonies with others, believers are encouraged and uplifted. Iron sharpens iron and my testimony encourages others to do the same.

8. Because It Perpetuates Truth for the Next Generation
The Lord Jesus tells us that believers are like wheat and unbelievers are like tares. Wheat must be planted every season. It never regenerates itself. Weeds grow automatically. It takes nothing for wrong to prevail and evil to predominate. It takes great effort for righteousness to be perpetuated.

9. Because It Demonstrates the Power of God

10. Because It Is a Timeless Principle
Even a casual reading of the Word of God will convince you that it has always been right for people who know God to tell people who don’t know God about God. Remember, it is an Old Testament verse that says, “He that winneth souls is wise.”

11. Because We Must Face Jesus at the Judgment Seat of Christ
“For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, whether it be good or bad. Knowing therefore the terror of the Lord, we persuade men; but we are made manifest unto God; and I trust also are made manifest in your consciences.” 2 Corinthians 5:10–11 (emphasis mine)

12. Because Our Hands Will Be Stained with the Blood of the Lost We Don’t Tell
“When I say unto the wicked, Thou shalt surely die; and thou givest him no warning, nor speakest to warn the wicked from his wicked way, to save his life; the same wicked man shall die in his iniquity; but his blood will I require at thine hand.” Ezekiel 3:18