assalam 'alaikum warahmatullahi wabarakatuh
MashaAllah you have thought me a new angle to answer that question brother, when you said, "It is Allah who created everything, time included, so technically there is nothing before time and and to us "in the beginning" means since time was created- time is the cage of mankind but an All Powerful Being like Allah would be out of that cage."
JazakAllahu khair my brother.
Just happy for you, so wanted to thank you.
wassalam 'alaikum warahmatullahi wabarakatuh