If it’s possible that God exists, then God actually exists.
THE POSSIBILITY OF GOD
It’s possible that a “maximally great being exists.”
Maximally great equals omnipotent, omniscient, moral perfection, and necessary existence).
THE NECESSITY OF GOD
If it’s possible that a maximally great being exists, then such a being exists in some possible world. If a maximally great being exists in some possible world, then it exists in every possible world, because necessary existence is part of maximal greatness.
THE REALITY OF GOD
If a maximally great being exists in every possible world, then it exists in the actual world. If a maximally great being exists in the actual world, then it exists in reality.
If it’s possible for God to exist, logic tells us he must. This makes belief not just “blind faith”, but a rational conclusion.