The new covenant is discussed in chapter 14 of the book God’s Word for Us Through Jeremiah.
تَجْرِي مُنَاقَشَةُ ٱلْعَهْدِ ٱلْجَدِيدِ فِي ٱلْفَصْلِ ١٤ مِنْ كِتَابِ رِسَالَةٌ مِنَ ٱللهِ بِفَمِ إِرْمِيَا‏ .‏