seven against thebes

20 LETTERS · STARTS WITH S

seven against thebes is a valid 20-letter word worth 27 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1V4E1N1A1G2A1I1N1S1T1T1H4E1B3E1S1
1 + 1 + 4 + 1 + 1 + 0 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 3 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does seven against thebes mean?

1