It was then a piece for the theater play `` Marko kazuje na kome je carstvo '' ( Marko names the Emperor ) , and its immense popularity with audiences prompted its adoption as the Serbian national anthem .
Original source was a piece for the theater play `` Marko kazuje na kome je carstvo '' ( Marko Names The Emperor ) , and it 's famous popularity with public wanted Bože Pravde as the Serbian national anthem .