in God's/heaven's name idiom (also in the name of God/heaven)
（用于加强语气）看在上帝的份上
used to add force to something that is said. Some people find the use of "God" offensive.
What in God's name caused that outburst? 老天，究竟是什么引发了这次情绪大爆发？
Why in the name of God didn't you tell me sooner? 天哪，你为什么不早点儿告诉我？