[He has made it] straight, to warn of severe punishment from Him (18:2)

﴿قَيِّمًا لِّيُنذِرَ بَأْسًا شَدِيدًا مِّن لَّدُنْهُ وَيُبَشِّرَ الْمُؤْمِنِينَ الَّذِينَ يَعْمَلُونَ الصَّالِحَاتِ أَنَّ لَهُمْ أَجْرًا حَسَنًا﴾
[ الكهف: 2]

18:2 [He has made it] straight, to warn of severe punishment from Him and to give good tidings to the believers who do righteous deeds that they will have a good reward

But rather He made it straight without any contradiction or discrepancy in it, to frighten those who deny the truth of a severe punishment which awaits them from Allah, and to tell the believers who do good actions what will please them, namely that there is a good reward for them which no other reward compares with.

(He has made it) Straight to give warning (to the disbelievers) of a severe punishment from Him, and to give glad tidings to the believers (in the Oneness of Allah Islamic Monotheism), who work righteous deeds, that they shall have a fair reward (i.e. Paradise).

phonetic Transliteration

Qayyiman liyunthira basan shadeedan min ladunhu wayubashshira almumineena allatheena yaAAmaloona alssalihati anna lahum ajran hasanan

Abdullah Yusuf Ali - Translation

(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,

Safi-ur-Rahman al-Mubarakpuri

(He has made it) straight to give warning of a severe punishment from Him, and to give good news to the believers, who do righteous deeds, that they shall have a fair reward.

Page 293 English transliteration