'As Sweet as Honey' in the Bible

So I went to the angel and asked him to give me the little book. "Take it," he said, "and eat the whole of it. You will find it bitter when you have eaten it, although in your mouth it will taste as sweet as honey."

So I took the roll out of the angel's hand and ate the whole of it; and in my mouth it was as sweet as honey, but when I had eaten it I found it very bitter.