'Unknown' in the Bible

So the great abundance will become forgotten in the land because of that subsequent famine, for it will be very severe.

Boaz answered her, “I have been made fully aware of everything that you have done for your mother-in-law since the death of your husband, and how you have left your father and mother and the land of your birth, and have come to a people that you did not know before.

Then one [of them] went into the field to gather herbs, and found a wild vine and gathered from it a lapful of wild gourds, and came and cut them up into the pot of stew, although they did not know what they were.

The measuring line will go out farther straight ahead to the hill Gareb; then it will turn to Goah.

“And you shall go out through the breaches [made in the city wall],Every woman straight before her [unable to turn aside],And you shall be cast to Harmon,”Says the Lord.