And they told the woman, Now we no longer believe (trust, have faith) just because of what you said; for we have heard Him ourselves [personally], and we know that He truly is the Savior of the world, the Christ. (John 4:42 AMP)
There is a limit to which your acquired believe, got from what you were told, can take you. You must push further to experience that personally.
If you must go far enough, then you must seek to know and believe God on a very personal level. Jesus Christ must then become your personal Lord and Saviour, not just the Saviour of the World.
Personal encounters come with huge force and effect!
Grow from the crowd, and be a True Disciple!