The Bible says that our physical father and our Spiritual Father are not the same:

Heb 12:9 ...we have all had human fathers ... we submit to the Father of our spirits and live!

If our physical father and our Spiritual Father were identical, our physical father becomes our Spiritual Father. Then, who is the Father of our souls?

Matt 6:9 ... 'Our Father in heaven, ...

The Father of all souls is God in heaven.
But we have not only our physical father but also the physical mother.
Then, does there exist the Mother of our souls as well?
Or, is there only Father?

Gal 4:26 Jerusalem that is above (the heavenly Jerusalem: GNT) is free, and she is our mother.

The Bible teaches us that there is our Mother as well as our Father in heaven.
All visible things were created by God to reflect God's invisible qualities--His eternal power and divine nature. (Rom 1:18-20)

The existence of our body causes us not to deny the existence of our father and mother who gave it to us. Therefore, the existence of our soul proves the existence of Father and Mother who gave it to us.

The Bible is really the amazing Words of God that make us realize spiritual principles and God's divine nature through this world we are living in.
We should know and believe in God the Father and God the Mother testified by the Bible and all things in this world.