There may be times when you do not see any fruit for your evangelistic labors. You are planting seed in the hearts of sinners but it seems that no one is being born again. If that is the case, consider this verse: “Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord” (1 Cor. 15:58).
Keep planting and don’t be tempted to revert to using the methods of modern evangelism to get “decisions for Christ.” That may make you rejoice because you think you are seeing fruit, but keep in mind that while we may rejoice over “decisions,” Heaven reserves its rejoicing for sinners who repent (see Luke 15:7), and repentance is God-given (see 2 Tim. 2:24–26). Sow in tears, and you will reap in joy—in God’s time.
Genesis 16:2 So Sarai said to Abram, See now, the Lord has restrained me from bearing children.Please, go in to my maid; perhaps I shall obtain children by her. And Abram heeded the voice of Sarai.
Ray Comfort's Daily Evidence 
How wonderful to hear truth being spoken in love. It’s too easy to try and deceive people into thinking they’re saved just to increase membership in a church or program. Thank God, you use your prominence to speak the truth. God doesn’t need sales people. God desires truth tellers. Your truthfulness helps us to understand the Scripture in Phil 2:12 (NKJ) that tells us to “… work out your own salvation with fear and trembling”.