Satan the Devil wants to discourage us because he knows that discouragement can make us weak spiritually and in other ways.
مِنْ جِهَةٍ أُخْرَى ،‏ يُرِيدُ ٱلشَّيْطَانُ إِبْلِيسُ أَنْ يُثَبِّطَنَا ،‏ لِأَنَّهُ يَعْرِفُ أَنَّ ٱلتَّثَبُّطَ يُضْعِفُنَا رُوحِيًّا .‏