Oh my gosh

does anybody here happen to know what the origins of this phrase came from? it would seem that it is a twist of "oh my god" but I cant find any pertinant information about it
thanks

It's a "Minced oath." "Many of the milder oaths listed below follow the old Hebraic and Middle English tradition of avoiding the use of sacred words, such as God, by substituting words with the same initial letter. Thus for God the oaths substitute George, ginger, Godfrey, golly, gosh, gracious, gravy, grief, etc." From I Hear America Talking: An Illustrated History of American Words and Phrases by Stuart Berg Flexner (Von Nostrand Reinhold Co., New York, 1976).