My goodness!; Oh my!
Interjection expressing surprise, wonder, or strong emotion. Often used in a slightly dramatic or old-fashioned way.
Oh my, it's been a long time!
My goodness, that must have been tough.
Adverbial use, often paired with adjectives or verbs to emphasize degree. Related to the emphatic それは, but reduplicated for stronger effect.
See also: それは
It was an extremely beautiful view.
He was overjoyed.