He always was, is the answer.
That boggles my mind, however when we consider that God has not ever existed in what we know as “Time,” because in fact, God caused “Time.” He brought it into existence before doing so, “Time” did not exist.
Time is described by words such as movement, change, motion.
Outside of “Time” is deathlessness, infiniteness, perpetuity.
Since we living humans have only experienced living in “Time,” it is difficult or impossible for most of us even to imagine living without “Time” when considering that God always was it seems like a fairy tale. When He created “Time” that was THE BEGINNING! God had to exist to cause this rhythm a cycle of rotation (movement). He existed before that period outside of “Time.” He existed in timelessness, infiniteness where there was NO BEGINNING; therefore HE ALWAYS WAS!
I am not a scientist just an everyday person of faith who was inspired to write this post after reading what an atheist had to say about God, who always was. On thinking through the eyes of an atheist, it takes more faith on their part to deny God than to believe in God when one considers the wonders of the world.
Of course, now that God has created “Time” the Catholic way is to believe not only does He live in eternity, but He dwells with us in Time and Eternity.
I end with this Tanka Poem that I wrote dwelling yesterday on this very subject.