God, the Exalted, is the absolute being and perfection. There is no deficiency or imperfection in Him. He is unique and has the
power to do everything. He has knowledge of everything at all times and places. He is All-Hearing and "Seeing". He has will power and free choice; He is alive and the Creator of all things. He is the source of all good. He loves all creatures and is Kind towards all of them.
 The term “God” is one of the most general and simplest concepts that everyone, even atheists that deny His existence, definitely have some kind of perception of, although comprehending the true nature of his essence is out of our reach. The ways to knowing and comprehending God can be summed up in the following ways: 1. Reason and intellect, like the argument of the necessary and possible being. 2. Through experimentation and sensation, such as the argument from design.[i] 3. The way of the heart or the argument of fitrah (genesis, innate disposition towards virtue and knowledge)[ii],[iii] The easiest and the best way to understand and know God is the argument of fitrah whereby a person refers to his own God-gifted nature as well as to his inward where he sees God without any rational argument or any experimentation. Thus he reaches God through the way of the heart.
[i] - Just because this way utilizes experimentation doesn’t mean it is devoid of any reasoning and rationality, what is meant when it is said that it is experimental is that one of the premises of the argument is such, which is to observe the different phenomena of this world.
[ii] - Ma’arefe Eslami, vol. 1, pg. 41
[iii] - For further information see: Understanding God; Adopted from Question 479 (website:520.