The divine second person of the Holy Trinity and the incarnation

"Nor is the unchangeableness of the divine nature to be disproved by the incarnation of Christ; for though he, a divine Person, possessed of the divine nature, was made flesh, or became man; the divine nature in him was not changed into the human nature, nor the human nature into the divine, nor a third nature made out of them both; was this the case, the divine nature would have been changeable; but so it was not; for as it has been commonly said, 'Christ remained what he was, and assumed what he was not;' and what he assumed added nothing to his divine person; he was only manifested in the flesh; he neither received any perfection, nor imperfection, from the human nature; though that received dignity and honour by its union to him, and was adorned with the gifts and graces of the Spirit without measure, and is now advanced at the right hand of God." - John Gill, The Body of Divinity, Pg. 37

The incarnation did not change the Son of God. Nothing was added to Him when he assumed the nature of man.