Al Baqarah 2:214 “ Do you think that you shall enter Paradise without such (trials) as came to those who passed away before you? They were afflicted with severe poverty, ailments and were so shaken that even the Messenger and the believers with him said,’ When shall Allah’s Help arrive?’. Yes certainly, the Help of Allah is near.”
Al Fajr 89:15 “As for man, when his Lord tries him by giving him honor and bounties, then he says,’ My Lord has honored me.’ But when he tries him by limiting his sustenance, he says,’ My Lord has humiliated me.’
Al Maarij 70:19,20,21 “ Verily, man was created very impatient. Discontented when evil touches him. And miserly when good touches him.
Increasing the strength of faith and resolve in difficult circumstances.
Increasing the rewards and place in Jannah.
Forgiveness of sins.
Differentiation between true believers and the hypocrites. Al Imran 3:166-167” And what you suffered on the day(Uhad) the two armies met was by the leave of Allah in order that he might test the believers. And that He might test the hypocrites “
Truth to prevail and the falsehood to be defeated.
Al Isra 17;81 “Say truth has come and falsehood has vanished. Surely falsehood is bound to vanish.”