You state: "Does it mean that we just have to believe in the facts that a person named Jesus Christ died for our sins and then you are saved?"
My point was, as well as the scripture posted was saying that you must hear the gospel. The gospel tells of Jesus and what He did for us. One can not accept Jesus before they ever hear of Him? All are called to spread the gospel. It's called the Great Commission.
Matthew 28:18-20
"Then Jesus came to them and said, 'All authority in heaven and on earth has been given to me. Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. And surely I am with you always, to the very end of the age.'"
We must all have a deep relationship with Him. How can He be our bridegroom and we are His bride with out it? I hope we are all preparing for the wedding supper.