‘Oh my God’ is an interesting expression. In modern digital world, OMG is also used many times to represent the same expression. If you live in a metropolitan city, you will notice people speaking various regional languages in India will still use the same expression in English itself. Just like we are used to say ‘I love you’ instead of the regional versions of this expression.
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Now the word प्रभु can also be replaced with भगवान (Bhagavāna) or परमात्मा (Paramātmā). The meaning and the feeling would remain the same.
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