'Kept' in the Bible

At lunchtime, Boaz invited her, "Come on over, have some food, and dip your bread in our oil and vinegar." So she sat down beside the harvesters, and he handed her some roasted grain, which she ate until she was satisfied. She kept what was left over.

So she kept fast by the maidens of Boaz to glean unto the end of barley harvest and of wheat harvest; and dwelt with her mother in law.