What were the Lord's words about the things pertaining

[Mary Naeem]

Pope Shenouda III

What were the Lord's words about the things pertaining to the kingdom of God?
Undoubtedly His words were of such great importance that they were worth Him having many meetings with His Apostles after His resurrection. Yet despite their great importance, His words were not recorded in the Holy Bible. Most probably they were matters that concerned the leaders of the Church, for them to understand and teach, following the Lord's saying: "... teaching them to observe all things that I have commanded you" (Matt.28: 20), without mentioning what His commandments to them were.