Al-Kahf - 18:2

قَيِّمًا لِّيُنذِرَ بَأْسًا شَدِيدًا مِن لَّدُنْهُ وَيُبَشِّرَ الْمُؤْمِنِينَ الَّذِينَ يَعْمَلُونَ الصَّالِحَاتِ أَنَّ لَهُمْ أَجْرًا حَسَنًا
[18:2]
Rightly directing, that he might give warning of severe punishment from Him and give good news to the believers who do good that they shall have a goodly reward,
(He hath made it) Straight (and Clear) in order that He may warn (the godless) of a terrible Punishment from Him, and that He may give Glad Tidings to the Believers who work righteous deeds, that they shall have a goodly Reward,
(But hath made it) straight, to give warning of stern punishment from Him, and to bring unto the believers who do good works the news that theirs will be a fair reward,