To illustrate: An army of soldiers will often go through a series of grueling drills long before there is even the threat of a battle.
١٦ لِمَ مِنَ ٱلْمُهِمِّ أَنْ نَتَهَيَّأَ ٱلْآنَ لِمُوَاجَهَةِ ٱلضِّيقِ ؟‏