Hence, he must have known that sexual unions between women and materialized spirits were both unnatural and wrong.
وَلَا بُدَّ أَنَّهُ تَأَكَّدَ مِنْ ذٰلِكَ حِينَ نَمَا أَوْلَادُهُمْ حَتَّى أَصْبَحُوا عَمَالِقَةً .‏