The topic of the sermon was “One Mind”. The base scripture referenced can be found in the book of Philippians.
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.
To get a more complete picture of what the apostle Paul is referring to when he said, “have this mind among yourselves …” you need to step back just a bit.