The LORD says:

To believe in Me means to trust me completely.  When
you believe in something or someone, you let your
guard down and receive what they offer.  I offer grace
and mercy, healing and forgiveness, love and peace,
power and unity.  Believing means seeing in My
Kingdom.  Once you believe, you will see things
in a way you never knew was possible.  The more you
trust Me and believe, the more I will show you.

2 Corinthians 4:3-4
"But even if our gospel is veiled, it is veiled to those who
are perishing,whose minds the god of this age has blinded,
who do not believe, lest the light of the gospel of the glory
of Christ, who is the image of God, should shine on them."