Akademik

семь верст до небес
СЕМЬ ВЕРСТ ДО НЕБЕС (И ВСЕ ЛЕСОМ) наговорить, наобещать и т.п. coll, humor or iron
[NP; these forms only; adv (quantif); fixed WO]
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(to say) a lot of things which are either not true or are presented in an unintelligible, long-winded fashion, (to make) a lot of promises (that one has no intention of keeping):
- наговорить{{}}семь верст до небес say all kinds of things;
- talk a lot of hot air;
- go on at a great rate and leave s.o. baffled;
|| наобещать{{}}семь верст до небес make s.o. a cartload of (empty) promises;
- promise s.o. the moon (and the stars).

Большой русско-английский фразеологический словарь. — М.: ACT-ПРЕСС КНИГА. . 2004.