Acts 2:37 Now when they heard this, they were cut to the heart, and said to Peter and the rest of the apostles, “Men and brethren, what shall we do?”
It is the Holy Spirit who will convict people when they hear the word of God; but how will they hear the word of God unless we are willing to tell them?
Jesus gave us the command to go out into the world and tell people about God and about salvation; He did it for a reason.
Jesus continued to tell people about God all the time, even though He was and is Christ. If He was willing to put His own importance aside and tell people about God, we should be willing too.