Word by Word Analysis

إِنْ أَحْسَنتُمْ أَحْسَنتُمْ لِأَنفُسِكُمْ ۖ وَإِنْ أَسَأْتُمْ فَلَهَا ۚ فَإِذَا جَآءَ وَعْدُ ٱلْـَٔاخِرَةِ لِيَسُـۥٓـُٔوا۟ وُجُوهَكُمْ وَلِيَدْخُلُوا۟ ٱلْمَسْجِدَ كَمَا دَخَلُوهُ أَوَّلَ مَرَّةٍ وَلِيُتَبِّرُوا۟ مَا عَلَوْا۟ تَتْبِيرًا 7

[And said], "If you do good, you do good for yourselves; and if you do evil, [you do it] to them [i.e., yourselves]." Then when the final [i.e., second] promise came, [We sent your enemies] to sadden your faces and to enter the masjid [i.e., the temple in Jerusalem], as they entered it the first time, and to destroy what they had taken over with [total] destruction.