'Know' in the Bible

Boaz replied to her, "I have been given a full report of all that you have done for your mother-in-law following the death of your husband -- how you left your father and your mother, as well as your homeland, and came to live among people you did not know previously.

So bathe yourself, rub on some perfumed oil, and get dressed up. Then go down to the threshing floor. But don't let the man know you're there until he finishes his meal.

So she slept beside him until morning. She woke up while it was still dark. Boaz thought, "No one must know that a woman visited the threshing floor."

Then Naomi said, "Stay put, my daughter, until you know how the matter turns out. For the man will not rest until he has taken care of the matter today."

So I am legally informing you: Acquire it before those sitting here and before the leaders of my people! If you want to exercise your right to redeem it, then do so. But if not, then tell me so I will know. For you possess the first option to redeem it; I am next in line after you." He replied, "I will redeem it."