Why is there a repetition in Surat Al-Kafiroon?

I checked 2 mushaf and internet, and as far as I can see, [3rd ayah](http://quran.com/109/3) and [5th ayah](http://quran.com/109/5) of [Surat Al-Kāfirūn](http://quran.com/109) are exactly the same. On the other hand, 3rd ayah translated as; > Nor are you worshippers of what I worship and 5th ayah translated as > Nor will you be worshippers of what I worship. What is the cause of the difference in translation of these two ayahs?