Final answer:
Ayahs 19, 20, and 21 require more context to be properly explained.
Step-by-step explanation:
Ayahs 19, 20, and 21 are part of a larger context, which can only be determined when the specific surah or chapter is mentioned. The term 'ayah' refers to a verse in the Quran. Each ayah in the Quran has a specific meaning and context. In order to provide a proper explanation of ayahs 19, 20, and 21, more information about the surah and its surrounding verses is needed.