Yes, The Key Word Is… “Believe”
But it takes more than believing that God “exists” or that Jesus died.
Even the devil believes those things. Jesus’s life and death are historical facts.
So, what does it mean to “believe?”
It simply means to completely depend on or to trust in something or someone.
For example, just sit down in a chair and pick your feet up off the ground. There… you are “trusting” that chair. You have your full weight on it and you “believe” it will hold you up.