Have you ever asked yourself whether or not witnessing and evangelism of any kind is worth the trouble? After all, if the gospel is hard to accept (we've talked about that before) and if God chooses His people anyway, why should you put yourself out? If you looked at the world and judged God's power by the way men respond to it, you would give up trying to share the Word of God with anybody.
I've poured my heart out to people. I've preached from God's word. I've talked to people about the saving grace of God. I've even shown them proof from Scripture that the Messiah came, died and rose again. And yet they chose to not believe because they said the message was too hard. But that's all right, because all that the Father gives to Christ are going to come home. That's what Jesus said: "All that the Father gives Me will come to Me" (John 6:37).
I'm not responsible for who gets saved, and neither are you. I refuse that responsibility. Then who IS responsible? Jesus said, "No one can come to Me unless the Father who sent Me draws him; and I will raise him up on the last day." (John 6:44) God has that responsibility, not us. Therefore, I can look over the multitude and say, as Jesus said, "Most of you won't believe." But some will believe, brought to faith through reading the Bible, talking with a friend, or hearing a preacher. Then, instead of being unbelievable and foolish, these words that are so hard to believe become the only guide through the narrow gate that leads to eternal life. It becomes the only truth rich enough, complete enough, and holy enough to save a soul from eternal fire.
Those hard words become precious and welcome and treasured. "All that the Father gives to Christ, they will come." They will come. Our job, our responsibility, our calling, is to reach them with the truth.