"Have this mind among yourselves, which is yours in Christ Jesus, who, though he was in the form of God, did not count equality with God a thing to be grasped, but emptied himself, by taking the form of a servant, being born in the likeness of men. And being found in human form, he humbled himself by becoming obedient to the point of death, even death on a cross. Therefore God has highly exalted him and bestowed on him the name that is above every name, so that at the name of Jesus every knee should bow, in heaven and on earth and under the earth, and every tongue confess that Jesus Christ is Lord, to the glory of God the Father." -Philippians 2:5-11
Christ assumed the form of a servant, even while remaining God and having the form of God; he was God, and his divine words and works were spoken and wrought for our benefit. As a servant, he served us with these. He did not require us to serve him in compensation for them, as in the capacity of a Lord he had a just right to do. He sought not honor or profit thereby, but our benefit and salvation. It was a willing service and gratuitously performed, for the good of men. It was a service unspeakably great, because of the ineffable greatness of the minister and servant -- God eternal, whom all angels and creatures serve.