Strong H2134 זַךְ zak · pure

Exodus

1. Exodus 27:20
   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.
2. Exodus 30:34
   And the Lord said unto Moses, Take unto thee sweet spices, stacte, and onycha, and galbanum; these sweet spices with pure frankincense: of each shall there be a like weight: