Stages of human development

وَقَدْ خَلَقَكُمْ أَطْوَارًا

While He has created you in stages?

مِن نُّطْفَةٍ خَلَقَهُۥ فَقَدَّرَهُۥ

From a sperm-drop He created him and destined for him;

خَلَقَ ٱلْإِنسَـٰنَ مِنْ عَلَقٍ

Created man from a clinging substance.