Leviticus 24:1 BBE

¹  And the Lord said to Moses,

²  Give orders to the children of Israel to give you clean olive oil for the light, so that a light may be burning at all times,

³  Outside the veil of the ark in the Tent of meeting; let Aaron see that it is burning from evening till morning at all times before the Lord: it is a rule for ever through all your generations.