This 4.75 inch high clay jar is a replica of those found in ruins from the 1st century A.D.  This is the type of jar that would have been used to fill the Herodian and the early Christian lamps.  It only holds a few ounces of olive oil but that would provide enough fuel to allow the lamp to burn a few more hours.  The women of the household were responsible for keeping a lamp burning in the house.  They would have to get up and refill the lamp during the night to prevent it from going out. 

This terra cotta Oil Jar for Biblical Lamps is glazed to prevent the oil from being absorbed into the clay.