Allah's statement,

﴿وَلاَ تَهِنُواْ فِى ابْتِغَآءِ الْقَوْمِ﴾

(And don't be weak in the pursuit of the enemy;) means, do not weaken your resolve in pursuit of your enemy. Rather, pursue them vigorously, fight them and be wary of them.

﴿إِن تَكُونُواْ تَأْلَمُونَ فَإِنَّهُمْ يَأْلَمُونَ كَمَا تَأْلَمونَ﴾

(if you are suffering then surely they are suffering as you are suffering,) meaning, just as you suffer from injuries and death, the same happens to the enemy. In another Ayah, Allah said,

﴿إِن يَمْسَسْكُمْ قَرْحٌ فَقَدْ مَسَّ الْقَوْمَ قَرْحٌ مِّثْلُهُ﴾

(If you suffer a harm, be sure a similar harm has struck the others). Allah then said,

﴿وَتَرْجُونَ مِنَ اللَّهِ مَا لاَ يَرْجُونَ﴾

(but you have a hope from Allah that for which they hope not;) meaning, you and they are equal regarding the injuries and pain that you suffer from. However, you hope for Allah's reward, victory and aid, just as He has promised you in His Book and by the words of his Messenger . Surely, Allah's promise is true. On the other hand, your enemies do not have hope for any of this. So, it is you, not they, who should be eager to fight so that you establish the Word of Allah and raise it high. i

﴿وَكَانَ اللَّهُ عَلِيماً حَكِيماً﴾

(And Allah is Ever All-Knowing, All-Wise.) means, He is most knowledgeable and wise in all what He decides, decrees, wills and acts on concerning various worldly and religious ordainments, and He is worthy of praise in all conditions.

﴿إِنَّآ أَنزَلْنَا إِلَيْكَ الْكِتَـبَ بِالْحَقِّ لِتَحْكُمَ بَيْنَ النَّاسِ بِمَآ أَرَاكَ اللَّهُ وَلاَ تَكُنْ لِّلْخَآئِنِينَ خَصِيماً - وَاسْتَغْفِرِ اللَّهِ إِنَّ اللَّهَ كَانَ غَفُوراً رَّحِيماً - وَلاَ تُجَـدِلْ عَنِ الَّذِينَ يَخْتَانُونَ أَنفُسَهُمْ إِنَّ اللَّهَ لاَ يُحِبُّ مَن كَانَ خَوَّاناً أَثِيماً - يَسْتَخْفُونَ مِنَ النَّاسِ وَلاَ يَسْتَخْفُونَ مِنَ اللَّهِ وَهُوَ مَعَهُمْ إِذْ يُبَيِّتُونَ مَا لاَ يَرْضَى مِنَ الْقَوْلِ وَكَانَ اللَّهُ بِمَا يَعْمَلُونَ مُحِيطاً - هَـأَنْتُمْ هَـؤُلاءِ جَـدَلْتُمْ عَنْهُمْ فِى الْحَيَوةِ الدُّنْيَا فَمَن يُجَـدِلُ اللَّهَ عَنْهُمْ يَوْمَ الْقِيَـمَةِ أَمْ مَّن يَكُونُ عَلَيْهِمْ وَكِيلاً ﴾

(105. Surely, We have sent down to you (O Muhammad ) the Book in truth that you might judge between men by that which Allah has shown you, so be not a pleader for the treacherous.) (106. And seek the forgiveness of Allah, certainly, Allah is Ever Oft-Forgiving, Most Merciful.) (107. And argue not on behalf of those who deceive themselves. Verily, Allah does not like anyone who is a betrayer, sinner.) (108. They may hide (their crimes) from men, but they cannot hide (them) from Allah; for He is with them (by His knowledge), when they plot by night in words that He does not approve. And Allah ever encompasses what they do.) (109. Lo! You are those who have argued for them in the life of this world, but who will argue for them on the Day of Resurrection against Allah, or who will then be their defender)