They have knowledge of the Scriptures and are experienced in applying Bible principles.
فَهُمْ مُطَّلِعُونَ عَلَى ٱلْأَسْفَارِ ٱلْمُقَدَّسَةِ وَلَدَيْهِمْ خِبْرَةٌ فِي تَطْبِيقِ مَبَادِئِ ٱلْكِتَابِ ٱلْمُقَدَّسِ .‏