2 Kings 4:4-7

2 Kings 4:4-7. And when thou art come in, thou shalt shut the door upon thee and upon thy sons, and shalt pour out into all those vessels, and thou shalt set aside that which is full. So she went from him, and shut the door upon her and her sons, who brought the vessels to her; and she poured out. And it came to pass, when the vessels were full, that she said unto her son, Bring me yet a vessel. And he said unto her, There is not a vessel more. And the oil stayed. Then she came and told the man of God.

As it was through obeying his directions she had miraculously obtained this large supply of oil, she would not make use of it without further counsel from the man of God, who had already given her such good advice.