In the fourth verse (66), by abrogating this injunction for future, the second injunction given was:

الْآنَ خَفَّفَ اللَّـهُ عَنكُمْ وَعَلِمَ أَنَّ فِيكُمْ ضَعْفًا ۚ فَإِن يَكُن مِّنكُم مِّائَةٌ صَابِرَ‌ةٌ يَغْلِبُوا مِائَتَيْنِ ۚ وَإِن يَكُن مِّنكُمْ أَلْفٌ يَغْلِبُوا أَلْفَيْنِ بِإِذْنِ اللَّـهِ ۗ وَاللَّـهُ مَعَ الصَّابِرِ‌ينَ ﴿66﴾

Now Allah has made it easy on you and He knew that there is weakness in you. So, if there are one hundred among you, who are patient, they will overcome two hundred - 8:66.

Here too, the purpose is to order that it is not permissible for one hundred Muslims to avoid fighting against two hundred disbelievers. It will be recalled that, in the first verse (65), the avoidance of one Muslim to fight against ten was declared to be forbidden. Here, in this verse (66), the avoidance of one against two was all that remained forbidden. And this is the last and final injunction which is operative forever and shall continue as such.

Here too, the command does not appear in the usual style of a command. Instead, the manner used is that of glad tidings which indicates that asking one Muslim to go out and stand firm against two disbelievers was, God forbid, no injustice or coercion. To be honest, Allah Ta` ala has Himself placed in a Muslim person - because of his 'Iman or Faith - a special power that one of them turns out to be equal to two.

But, at both places, the glad tidings about this support and victory has been made subject to the condition that these Muslims should be observers of patience and fortitude. It is obvious that standing steadfast while endangering one's dear life in fighting and killing on a battlefield is a feat which can be performed only by a person whose 'Iman is perfect - because, perfect 'Iman generates enthusiasm for surrendering one's life in the way of Allah and this enthusiasm multiplies his combat strength a lot more.

Towards the end of the verse, it was in the manner of a general principle that it was stated: وَاللَّـهُ مَعَ الصَّابِرِ‌ينَ (And Allah is with the patient - 66). Included here, there are those who remain steadfast in the battlefield as well as those who keep following the usual injunctions of the Shari’ ah strictly. The promise of Divine company stands good for all of them and in this state of His being with one and all of them lies the real secret of their victory - because, whoever has the good fortune of having the company of the Absolute Master simply cannot be moved away from the station of duty by anyone, not even by the whole world in unison.