The answer lies in the fact that God, like you and I, has three parts: a body, a soul, and a spirit.
The body of God has many names. One name, as revealed by John 1:1, is "the Word."
"In the beginning was the Word, and the Word was with God, and the Word was God." John 1:1
Like you said, the Word created all things.
"He was in the beginning with God. All things came into being through Him, and apart from Him nothing came into being that has come into being." John 1:2-3
The Word became a Son when He became a man through Mary.
"And the Word became flesh, and dwelt among us, and we saw His glory, glory as of the Father, full of grace and truth."
What do you mean? Jesus was already perfect and new everything.
The belief that souls exist in heaven before birth is known as pre-existence.
Except sin and anything bad - yes, heaven has everything
Already It's Heaven was created in 1968-05.
Yes. In Genesis, it says that God created both Heaven and Earth, which means everything in Heaven and in Earth. Yes, He did create EVERYTHING.
No. Even the existence of heaven is unproven.
In many religious beliefs, it is believed that in heaven, there is no need for physical functions like breathing as it is a place of spiritual existence.
7th heaven season 8 is already out.
Life after death is The state of afterlife; existence in heaven
Life after death is The state of afterlife; existence in heaven
Life after death is The state of afterlife; existence in heaven
Because God spoke the Universe into existence. In the beginning God created the heaven and the earth. Existence exists because you have a mind capable of perceiving it's existence. And also the big bang didn't hurt. Existence has no known meaning in this realm alone. All existence is designed to hold itself together with balance within itself. Eventually, hopefully, we will find out the meaning of our existence.