“And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth.” (John 1:14)
Jesus incarnated himself into a human! The divine became human! But, Jesus did NOT change his divinity. Jesus did not become less God. The essence of his being remained divine. When this verse says he “became flesh” it doesn’t mean he changed from being God. Jesus has always been and will always be God.