Let the same mind be in you that was in Christ Jesus, who, though he was in the form of God, did not regard equality with God a thing to be exploited, but emptied himself, taking the form of a slave, being born in human likeness. And being found in human form, he humbled himself and became obedient to the point of death — even death on a cross. 

– Philippians 2:5-8 (NRSV)