[Eph. 5:32](http://drbo.org/x/d?b=drl&bk=56&ch=5&l=32-#x):

> 
> This is a great sacrament; **but** [[***autem***](http://www.perseus.tufts.edu/hopper/morph?la=la&l=autem) / **[δὲ](http://www.perseus.tufts.edu/hopper/morph?la=greek&l=%CE%B4%E1%BD%B2)**] I speak in Christ and in the church.
> 
> 
> 

Some English translations say "and" instead of "but". Translating "[δὲ](http://www.perseus.tufts.edu/hopper/morph?la=greek&l=%CE%B4%E1%BD%B2)" as "but" would seem to exclude that St. Paul is speaking of marriage being a great sacrament or mystery (*mysterion*) and that St. Paul is only speaking of Christ's relationship with His Church being a great mystery.

In other words: Is [δὲ](http://www.perseus.tufts.edu/hopper/morph?la=greek&l=%CE%B4%E1%BD%B2) an adversative or copulative particle?

Erasmus thought that "but I speak…" is a parenthetic remark ([Reynolds 2016 p. 738](https://isidore.co/calibre/#panel=book_details&book_id=6583)), but [*LSJ*](http://www.perseus.tufts.edu/hopper/morph?la=greek&l=%CE%B4%E1%BD%B2#lexicon) says "δὲ" can be used "to resume after an interruption or parenthesis".