It became evident, however, that further personal training in the house - to - house ministry was needed. Take the situation in the United States as an example.
وَلكِنْ تَبَيَّنَ أَنَّهُ مِنَ ٱلضَّرُورِيِّ تَقْدِيمُ ٱلْمَزِيدِ مِنَ ٱلتَّدْرِيبِ ٱلشَّخْصِيِّ لِهؤُلَاءِ ٱلْأَشْخَاصِ فِي مَجَالِ ٱلْخِدْمَةِ مِنْ بَيْتٍ إِلَى بَيْتٍ .‏