﴿ أُذِنَ لِلَّذِينَ يُقَٰتَلُونَ بِأَنَّهُمْ ظُلِمُوا۟ ۚ وَإِنَّ ٱللَّهَ عَلَىٰ نَصْرِهِمْ لَقَدِيرٌ ﴾

“PERMISSION [to fight] is given to those against whom war is being wrongfully waged and, verily, God has indeed the power to succour them -:”

Permission is granted to those who fight namely to the believers to fight back — this was the first verse to be revealed regarding the struggle in the way of God jihād because they have been wronged as a result of the wrong done to them by the disbelievers. And God is truly able to help them;