The One True God of Abraham, Allah SWT in Arabic and יהוה in Hebrew has no need for children as he does not have a wife. He does not have any parents or grandparents etc, He is Eternal, He created time, matter and space etc., never ages or gets tired. He is the Absolute Truth and Perfection. He is aware of everything and everyone. Even if the smallest ant on a dark rock in the depths of a mountain moves an inch He is aware. His Knowledge encompasses All.
He sent revelations before with Prophets to guide humanity on a path back to Heaven. He created all life from water and sustains every living thing.