'Sweet as Honey' in the Bible

And I went to the angel, and said to him, Give me the little book. And he said to me: Put it in your mouth; and it will make your stomach bitter, but in your mouth it will be sweet as honey.

And I took the little book out of the angel's hand and did as he said; and it was sweet as honey in my mouth: and when I had taken it, my stomach was made bitter.