'One' in the Bible

They took for themselves Moabite women as wives; the name of the one was Orpah and the name of the other Ruth. And they lived there about ten years.

And Ruth the Moabitess said to Naomi, “Please let me go to the field and glean among the ears of grain after one in whose sight I may find favor.” And she said to her, “Go, my daughter.”

Then Boaz said to Ruth, “Listen carefully, my daughter. Do not go to glean in another field; furthermore, do not go on from this one, but stay here with my maids.

Then she said, “I have found favor in your sight, my lord, for you have comforted me and indeed have spoken kindly to your maidservant, though I am not like one of your maidservants.”

Naomi said to her daughter-in-law, “May he be blessed of the Lord who has not withdrawn his kindness to the living and to the dead.” Again Naomi said to her, “The man is our relative, he is one of our closest relatives.”

So she lay at his feet until morning and rose before one could recognize another; and he said, “Let it not be known that the woman came to the threshing floor.”

So I thought to inform you, saying, ‘Buy it before those who are sitting here, and before the elders of my people. If you will redeem it, redeem it; but if not, tell me that I may know; for there is no one but you to redeem it, and I am after you.’” And he said, “I will redeem it.”