 Absolutely. Jesus said if he's lifted up, he will draw all men to him. The spirit of God is convicting the world of sin, righteousness and judgment. But people have to volitionally receive it. God doesn't force salvation upon anyone. It's a free will choice. And so many people have resisted the spirit. Satan is blinding the minds of men and women to the gospel. So there are those who have heard the gospel many times, but they've stiffened their necks. They've rejected it. They've not chosen to accept by faith the free gift of forgiveness and eternal life.