The Bible speaks of the sense of commission, which is doing what you should not do, instead of omission, which is not doing what you should do. It says in the book of James that if you know to do good and don't do it, it is sin.

We are supposed to share the gospel. So, I believe it can actually be a sinful thing to not do it.

To me, the model example of how to share your faith is Jesus with the woman at the well in John 4. He was patient with her. He took time for her. To some degree, she was kind of disrespectful to Him at first, initially kind of blowing off what he said and blowing off what he was saying to her. But then, as it continued on, she began to understand and ultimately believed.

Earth is only a pale version of heaven, not the other way around.

I don't think the problem that we have today is overzealous believers. I think the problem we have is underzealous believers.

Either you will have harmony with God and friction with people, or you will have harmony with people and friction with God.

I believe that the work of the Holy Spirit, through the church, will continue on.