'Nothing' in the Bible

So the king said to me, "Why is your face sad since you are not sick? This is nothing but sadness of the heart." And I was very much afraid.

Then he said to them, "Go, eat festive food and drink sweet drinks, and send a share to those for whom nothing is prepared; for this day is holy to our lord. Do not be grieved because the joy of Yahweh is your refuge."