What’s the origin of the phrase ‘Eat drink and be merry’?
From the Bible, Ecclesiastes VIII 15 (King James Version):
To eat, and to drink, and to be merry.
Meaning
From the Bible, Ecclesiastes VIII 15 (King James Version): To eat, and to drink, and to be merry.

From the Bible, Ecclesiastes VIII 15 (King James Version):
To eat, and to drink, and to be merry.
Historical trend
Source: Google Books Ngrams (1860–2020).