Some of the apostles ’ teaching was permanently recorded in the inspired books that are now part of the Christian Greek Scriptures.
اَلْفِقْرَةُ ٨ :‏ بِمَا أَنَّ ٱلْمُؤْمِنِينَ ٱلْجُدُدَ ‏ « كَانُوا يَعْكُفُونَ عَلَى تَعَالِيمِ ٱلرُّسُلِ » ،‏ فَهٰذَا يَعْنِي أَنَّ ٱلرُّسُلَ كَانُوا يُعَلِّمُونَ عَلَى أَسَاسٍ مُنْتَظِمٍ .‏