We “know that we originate with the truth ” by the fact that we display brotherly love and do not make a practice of sinning.
فَنَحْنُ « نَعْرِفُ أَنَّنَا مِنَ ٱلْحَقِّ » لِأَنَّنَا نُعْرِبُ عَنِ ٱلْمَحَبَّةِ ٱلْأَخَوِيَّةِ وَلَا نُمَارِسُ ٱلْخَطِيَّةَ .‏