'Alone' in the Bible

Then David went to Nob to Ahimelech the priest; and Ahimelech came trembling [in fear] to meet David and said to him, “Why are you alone, and no one with you?”

Kneeling at his feet she said, “My lord, let the blame and guilt be on me alone. And please let your maidservant speak to you, and listen to the words of your maidservant.