God is one

1. Say, “He is God, the One.

2. God, the Absolute.

3. He begets not, nor was He begotten.

4. And there is nothing comparable to Him.”

Quran 112

saying the Creator have a “son” it’s an insult to his Majesty and Glory. Attributing a son to God is equivalent to insulting Him since it negates His total independence, His Uniqueness, and His Oneness. God is holier than such thing.