They count the cost of faithful service, realizing from the outset that their assignment will mean giving up many of the material advantages available in Satan’s world.
فَهُمْ يَحْسُبُونَ ٱلنَّفَقَةَ ،‏ عَالِمِينَ أَنَّ خِدْمَةَ ٱللهِ تَتَطَلَّبُ ٱلتَّخَلِّيَ عَنِ ٱلْمُغْرِيَاتِ ٱلْمَادِّيَّةِ ٱلَّتِي يُقَدِّمُهَا عَالَمُ ٱلشَّيْطَانِ .‏