Salaamun Alaykum
In addition to the previous reply, perhaps below might be useful:
Our understanding of concepts such as "life", "death" and "existence" is coloured by our experiences. Our frame of reference is the reality that we inhabit, and it cannot be any other way. Even when we use words such as "nature of God", it is our understanding of the words "nature" and "God".
Therefore, when we talk of God as being "Alive", "Everlasting", and such, our immediate frame of reference is our own lives and existence. When we see that we come from being non-existent into existence, that we live and die, we sometimes might think of God as being alive and existing in the same manner.
Some theologians and philosophers will explain that God, who is the "source" of all that exists, is existence Himself. Whereas our existence is contingent, meaning it's dependent and possible, God's existence (or perhaps God as existence) is necessary.
I hope that the above discussion has shed some light. At the end of the day, all of our ruminations and musings are limited by our own limitations.
Always in need of your prayers
Hassanain