Wongwang
Silla monk who, back from Sui China, gave Gwisan and Chuhang the Five Precepts for Secular Life and drafted the plea for Sui troops
He studied Buddhism in Chen and Sui China and returned around 600. The Five Precepts for Secular Life he gave Gwisan and Chuhang - serve the king with loyalty, parents with filial piety, be faithful to friends, never retreat in battle, and kill with discrimination - became the code of the hwarang. When writing the plea for troops in 608 he said that destroying others to save oneself was not a monk’s work, but since he lived on the king’s land and ate its water and grass he could not refuse. The episode is cited as an example of state-protecting Buddhism.