How many stages are there in the Holy Quran?

First Stage is mentioned in Surah Al-Fatiha.
Second Stage is mentioned in Surah Al-Maida.
Third Stage is mentioned in Surah Younas.
Fourth Stage is mentioned in Surah Al-Isra.
Fifth Stage is mentioned in Surah As-Soara
Sixth Stage is mentioned in Surah Al-Saffat.
Seventh Stage is mentioned in Surah Al-Qaaf.