There's no Light without Darkness.

بسم الله الرحمن الرحيم

By the Sun and his
(glorious) splendour;
By the Moon as she follows him;
By the Day as it shows up (the Sun's) glory;
By the Night as it conceals it;
By the Firmament and its (wonderful) structure;
By the Earth and its (wide) expanse:
By the Soul, and the proportion and order given to it;
And its enlightenment as to its wrong and its right;
-Truly he succeeds purifies it,
And he fails that corrupts it!

(91:1-10) As-Syams, translated by'Abdullah Yusuf 'Ali


بسم الله الرحمن الرحيم

Demi Matahari dan sinarnya pada pagi hari
demi Bulan apabila mengiringinyademi siang apabila menampakkanya
demi malam apabila menutupinya (gelap gulita)
demi Langit serta pembinaanya (yang menakjubkan)
demi Bumi serta penghamparannya
demi Jiwa serta penyempurnaan(ciptaan)nya
maka Dia mengilhamkan kepadanya (jalan) kejahatan
dan ketakwaan sungguh beruntung orang yang menyucikan (Jiwa itu)
dan sungguh rugi orang yang menggotorinya.

(91:1-10) Surah As-Syams, Terjemah perkata Type Hijaz

Because Allah SWT created things in two opposing forces. Good will not exist without knowing what evil is like. We would not know what the light could provide us without knowing how darkness descends.