'Stomach' in the Bible

A man's stomach is filled with the fruit of his mouth. With the harvest of his lips he is satisfied.

because it doesn't go into his heart, but into his stomach, then into the latrine, thus purifying all foods?"

I went to the angel, telling him to give me the little book. He said to me, "Take it, and eat it up. It will make your stomach bitter, but in your mouth it will be as sweet as honey."

I took the little book out of the angel's hand, and ate it up. It was as sweet as honey in my mouth. When I had eaten it, my stomach was made bitter.