It’s beyond the human brain to grasp, but there was no before… Time itself was created!
Here’s an analogy to understand “no time”… When did 2 + 2 begin equaling 4? Of course that’s silly, it is not bound by time.
The first creation was Time and from there G-d continuously creates time. Each breath, each tick, each beat of the heart comes only once, created by G-d.
Every instant of life is a raw but precious jewel, beckoning, pleading, “Unlock my secret, do with me something to reveal my purpose of being! For I am here only this one time, and then never again.”
And so that is our primary mission: To elevate time and make it holy.
Menachem Mendel Bluming, Rabbi T. Freeman and Chabad.org