'Certain' in the Bible

Now there cried a certain woman of the wives of the sons of the prophets to Elisha, saying, "Your servant my husband is dead. You know that your servant feared Yahweh. Now the creditor has come to take for himself my two children to be slaves."

When the king asked the woman, she told him. So the king appointed to her a certain officer, saying, "Restore all that was hers, and all the fruits of the field since the day that she left the land, even until now."