[dreen]

There is a quote attributed to Genghis Khan:

'I am the flail of god. Had you not comitted great sins, god would not have sent a punishment like me upon you.'

Considering how total the destruction was that the Mongols visited on the conquered, it is almost believable. And likewise, them not invading Europe was considered to be divine intervention.

The Mongols believed the world was meant to be theirs, by divine right. Saying No to a Mongol when he asks you for something (eg your land or daughter) was considered a religious offense.

[evanjrowley]

The idea that divine intervention places limits on rulers, like Genghis Kahn, could be supported by Genesis 20:3–7, where a king is prevented from sinning through divine intervention.