The nab'-tree is the wood from which arrows and bows are made.
His saying: "Indeed, your Lord is Kind and Merciful," means: if they repent and reform.
النَّبْعُ: الْعُودُ الَّذِي يُعْمَلُ مِنْهُ السِّهَامُ وَالْقِسِيُّ.
قَوْلُهُ: ﴿فَإِنَّ رَبَّكُمْ لرءوف رَحِيم﴾ أَي: إِن تَابُوا وَأَصْلحُوا.
