God is a word. This word is used to imply a concept. This concept states that there is a force higher and greater than all mortal consciousness and all individual elements of nature.
According to various accounts, this force is said to be the origin of things. It is also said to possess the power to reward, punish, and judge actions of those that it has created.
I believe reality is not objective. The world is different things to different people. Hence, trying to grasp the God concept using traditional logic is futile.
God, to me, is you.
I am a mind. There is a part of me called the sub-conscious. You have it too. All our sub-conscious minds put together make a super-conscious mind. That is God to me.
The super-conscious mind is not conscious in a way we would understand. But it lives anyway. It is the sum total of all of us. The only way we can access it is through each other.