Religion is mans attempt to apprehend God. The statement neither presumes or denies the existence of a deity; it does, however, demonstrate an innate need for humanity to seek and or comprehend a creator. Humanity desires deity: it is therefore innate in our DNA, or we have been imbued by said creator with such a desire.
Religion is when people praise their God and pray to them and believe in there holy book. It is when you go to the holy place to worship your God. It's when you LOVE your God!