Why Trials in Life ?

 Tafsir for the Qur’an Chapter 3 Verse 142 from Tafsir Ibn kathir |

﴿أَمْ حَسِبْتُمْ أَن تَدْخُلُواْ الْجَنَّةَ وَلَمَّا يَعْلَمِ اللَّهُ الَّذِينَ جَـهَدُواْ مِنكُمْ وَيَعْلَمَ الصَّـبِرِينَ ﴾

(142.. Do you think that you will enter Paradise before Allah knows (tests) those of you who will perform Jihad and (also) knows (tests) those who are the patient) 

The Ayah asks, do you think that you will enter Paradise without being tested with warfare and hardships Allah said in Surat Al-Baqarah,

﴿أَمْ حَسِبْتُمْ أَن تَدْخُلُواْ الْجَنَّةَ وَلَمَّا يَأْتِكُم مَّثَلُ الَّذِينَ خَلَوْاْ مِن قَبْلِكُم مَّسَّتْهُمُ الْبَأْسَآءُ وَالضَّرَّآءُ وَزُلْزِلُواْ﴾

(Or think you that you will enter Paradise without such (trials) as came to those who passed away before you They were afflicted with severe poverty and ailments and were so shaken. ..) ﴿2:214﴾. Allah said,

﴿الم - ذَلِكَ الْكِتَابُ لاَ رَيْبَ فِيهِ هُدًى لِّلْمُتَّقِينَ ﴾

(Alif Lam Mim. Do people think that they will be left alone because they say: "We believe,'' and will not be tested) ﴿29:1,2﴾, This is why He said here,