sweet Mary mother of God

and his mother

Serves as an intensifier for an inclusive noun or phrase such as everyone, anyone, each someone or all someones.

be mother

To pour out tea for others.

bow down before the porcelain god

Synonym of worship the porcelain god (“to vomit into a toilet bowl”).

call someone everything but a child of God

To call someone many abusive names.

God forbid

indicating that the occurrence of something is very undesirable

God forfend

Don't let it be.

God is in the detail

Expresses the idea that whatever one does should be done thoroughly; i.e. details are important.

god that failed

A notable let-down or flop; a concept, product, or person that has failed to live up to very high expectations.