“But Queen Vashti refused.” The reason that Vashti refused is not given, but the king became very angry for a number of reasons. He was drunk, and that amplified things. Also, he was embarrassed in front of his guests because Vashti openly disobeyed him. Also, even the Queen was considered a subject of the king, and as such she could not disobey him; anyone else who did so would likely have been quickly executed. Vashti’s disobeying his public command made him look like a weak king, which, given all the people who would have loved to kill the king and take his throne, could be very dangerous.