Isn't believing in God enough?

This was the question of a lovely Muslim girl I spoke to this evening.

"You believe that there is one God. Good! Even the demons believe that— and shudder."
James 2:19

I think that she began to understand that it isn't enough just to believe in God's existence, as we explored our slavery to sin (our passage for discussion was John 8:31-36).

To quote J C Ryle -

'"The heart is deceitful above all things, and desperately wicked" (Jer. 17:9). Sin is a disease which pervades and runs through every part of our moral constitution and every faculty of our minds. The understanding, the affections, the reasoning powers, the will, are all more or less infected. Even the conscience is so blinded that it cannot be depended on as a sure guide, and is as likely to lead men wrong as right, unless it is enlightened by the Holy Ghost. The disease may be veiled under a thin covering of courtesy, politeness, good manners and outward decorum; but it lies deep in the constitution.

I admit fully that man has many grand and noble faculties left about him...But the fact remains that in spiritual things he is utterly "dead", and has no natural knowledge, or love, or fear of God."

Exploring all of these sort of themes, I think made the gospel so much clearer to her! I hope and pray it will be as J C Ryle also says - "Once let him see his sin, and he must see his Saviour."