You can check my answer here. The OP asked exactly the same Q: https://hinduism.stackexchange.com/a/17653/4732
– RickrossOct 22 '17 at 05:22
1
Any sentence is a combination of words and words are nothing but combinations of several alphabets. In Sanskrit there are 51 alphabets. But for the sentence (or words) to be considered powerful (in ur words) it has to be endowed with consciousness (chaitanya).Only mantras are endowed with that. Because they are spoken initially by God and heard by certain Rishi.
– RickrossOct 22 '17 at 05:25