brother. Here is the Ayah in Arabic: وَعَلَّمْنَاهُ صَنْعَةَ لَبُوسٍ لَّكُمْ لِتُحْصِنَكُم مِّن بَأْسِكُمْ ۖ فَهَلْ أَنتُمْ شَاكِرُ*ونَ You won't find the word 'first' in there. It just mentions that Allah the Almighty taught Prophet Dawud(David) how to make coats of armor previously unknown to that group of people. I don't know why people try to interpret Quran falsely by adding words that are not there in it. Extract from Maariful Quran: Lexically, the word لَبُوسٍ is used for anything which is worn in the neck for protection. Here is used for armor which is used in battle for protection against enemy. Brother My humble advice is to Download a good Tafseer of the Quran like Maariful Quran so you can read the commentary of the Ayah and have a better understanding of the Quran.