A common first - century lamp was an earthenware vessel with a wick that drew up liquid (usually olive oil) by capillary attraction to feed a flame.
كَذلِكَ سَيُلَاحِظُ ٱلنَّاسُ أَعْمَالَنَا ٱلْحَسَنَةَ كَمُنَادِينَ بِٱلْمَلَكُوتِ وَٱلصِّفَاتِ ٱلَّتِي نَتَمَتَّعُ بِهَا كَٱلِٱعْتِدَالِ وَٱلْعِفَّةِ .‏ —‏ تي ٢ :‏ ​ ١ -‏ ١٤‏ .‏