Of course, like the Ethiopian eunuch, they were already familiar with the basic teachings and principles of God’s Word. ​ — Acts 2: 37 - 41.
وَلكِنَّهُمْ طَبْعًا كَانُوا كَٱلْخَصِيِّ ٱلْحَبَشِيِّ مُطَّلِعِينَ عَلَى تَعَالِيمِ وَمَبَادِئِ كَلِمَةِ ٱللهِ ٱلْأَسَاسِيَّةِ .‏ —‏ اعمال ٢ :‏ ​ ٣٧ -‏ ٤١‏ .‏