2N-VOC (对天主教教皇或某些其他宗教领袖的尊称)陛下,圣座 You say Your Holiness or His Holiness when you address or refer respectfully to the Pope or to leaders of some other religions. (对天主教教皇或某些其他宗教领袖的尊称)陛下,圣座 [politeness]
The President received His Holiness at the White House.