Exodus 27:20

'Command the Israelites to bring you clear oil of pressed olives for the light so that the lamps may be kept burning.

(New International Version)

'You shall charge the sons of Israel, that they bring you clear oil of beaten olives for the light, to make a lamp burn continually.

(New American Standard Bible)

And thou shalt command the children of Israel, that they bring thee pure oil olive beaten for the light, to cause the lamp to burn always.

(King James Version)