'As Sweet as Honey' in the Bible

So I went up to the angel and told him to give me the little book. And he said to me, “Take it and eat it; it will make your stomach bitter, but in your mouth it will be as sweet as honey.”

So I took the little book from the angel’s hand and ate it, and in my mouth it was as sweet as honey; but once I had swallowed it, my stomach was bitter.