Previously on day 1 i told why do we fast ? we fast to attain Taqwa . No question is why do we need to attain Taqwa (Conscious of Allah ) ?
“This is the Book about which there is no doubt, a guidance for those conscious of Allah” Quran(2:2).
So we need Taqwa to get Guidance from Allah through his book Quran.
If you fast you get taqwa, if you get taqwa you get “Guidance ” .