So you have to believe it to believe it?
The ears to hear are gifts from God which are not given to everyone. Jesus often said If any man have ears to hear, let him hear.
Believing is how one reacts when he hears Him does he receive Him or refuse Him?
And he said, Therefore said I unto you, that no man can come unto me, except it were given unto him of my Father. John 6:65
But as many as received him, to them gave he power to become the sons of God, [even] to them that believe on his name: Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God. John 1:12-13
And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world. John 12:47