Well, Ruby, I completely disagree with Nightwork and respectfully disagree with Thesource.
I don't "believe" in God, because I KNOW for certain that He exists and I know for certain who He is. Unlike, my friend, Thesource, it is not just "simply a matter of faith". Basing one's belief on faith alone is basing one's belief on blind faith, and our Heavenly Father and Son do not want us to live by blind faith.
It is important to know that there are 3 elements to any belief system:
1) Genuine authority
Our Heavenly Father and His only begotten Son, Christ Yeshua, didn't leave us high and dry; they left us with a great deal of evidence and genuine authority such that faith is needed to bridge the gaps between the two.
Please understand that God could reach down out of the sky and water all of Earth's plants and trees with His hand, but that would undermine faith. In fact, faith is the key, because without faith, we cannot please God. Mankind cannot know God through reason and genuine authority alone - each one must be accompanied with faith.
And faith, is what the world will be judged on, that is why God deliberately kept some things hidden. It was a plot to uncover and discover the faithful...those who knocked, seeked, asked and believed. Because, "Blessed is he who believes and hasn't seen."