A person receives his nature from his father. His Father's nature is Divine. Therefore, He is also Divine, which makes Him a Divine person. A person possesses a nature. A nature does not possess a person.
Nature describes what a person can do, but the person does it.
Mothers give birth to totally complete persons, each with a nature, and never to a nature alone. And the Word was made flesh, and dwelt among us. The Word was GOD and the Word was made flesh. The Blessed Virgin Mary did. She is the mother of the Divine Word Incarnate.