What is Venerable brethren?

The Venerable, used as a style or epithet in several Christian churches

"Brethren" is a plural word for "Brother", akin to "Brothers". It is perhaps a more archaic way to signify a plurality of men who are considered a brother.

of course we drink, sheesh, we would dehydrate if we didnt.

brother.

Execrable is the opposite of venerable.