oh my Lord vs praise the Lord

oh my Lord

intj
  • An expression of surprise, astonishment, shock, dismay, supplication, or consternation. 

praise the Lord

intj
  • stereotypical exclamation used in mockery of Christianity. 

  • expression of thankful happiness. 

  • phrase used to thank God by Christians. 

How often have the words oh my Lord and praise the Lord occurred in a corpus of books? (source: Google Ngram Viewer )