13, 14. What Scriptural principles apply to keeping our Kingdom Hall clean and tidy?
١٣ ،‏ ١٤ كَيْفَ يُعَلِّمُنَا ٱلْكِتَابُ ٱلْمُقَدَّسُ ضَرُورَةَ إِبْقَاءِ قَاعَةِ ٱلْمَلَكُوتِ نَظِيفَةً وَمُرَتَّبَةً ؟‏