'Pure' in the Bible

They are to set a leather-dyed skin covering over it, cover it with a pure blue cloth, and then insert its poles.

But if the woman has not defiled herself and is pure, she will be unaffected and will be able to conceive children.

accompanied by one tenth of an ephah of fine flour for grain offering, mixed with one fourth of a hin of pure olive oil.

"Now you are to stay outside the camp for seven days, after which any of you who has killed a person or touched someone who was killed may purify yourselves on the third day. You and your captives will be pure on the seventh day.