Tafsir of Al-Anbiya' 21:16

Creation was made with Justice and Wisdom Allah tells:

وما خلقنا السماء واﻻرض وما بينهما ﻻعبين

We created not the heavens and the earth and all that is between them for play. Allah tells us that He created the heavens and the earth in truth, i.e. with justice

ليجزى الذين أساءوا بما عملوا ويجزى الذين أحسنوا بالحسنى

that He may requite those who do evil with that which they have done, and reward those who do good, with what is best. (53:31) He did not create all that in vain or for (mere) play:

وما خلقنا السماء واﻻرض وما بينهما بطﻼ ذلك ظن الذين كفروا فويل للذين كفروا من النار

And We created not the heaven and the earth and all that is between them without purpose! That is the consideration of those who disbelieve! Then woe to those who disbelieve from the Fire! (38:27)

لو أردنا أن نتخذ لهوا ﻻتخذناه من لدنا إن كنا فاعلين