فَلَوْلَآ إِذْ جَآءَهُم بَأْسُنَا تَضَرَّعُوا۟ وَلَـٰكِن قَسَتْ قُلُوبُهُمْ وَزَيَّنَ لَهُمُ ٱلشَّيْطَـٰنُ مَا كَانُوا۟ يَعْمَلُونَ Qur’an Al-An'am (6:43)Falawla ith jaahum basuna tadarraAAoo walakin qasat quloobuhum wazayyana lahumu alshshaytanu ma kanoo yaAAmaloona
Sorrow and suffering may (if we take them rightly) turn out to be the best gifts of God to us. According to the Psalms (xciv. 12), "Blessed is the man whom Thou chastenest, O Lord!" Through suffering we learn humility, the antidote to many vices and the fountain of many virtues. But if we take them the wrong way, we grumble and complain: we become faint-hearted; and Satan gets his oppurtunity to exploit us by putting forward the alluring pleasures of his Vanity Fair.