Complex sentence: He's one of the famous members of the Gwangsan Kim clan and he was enshrined in the Confucian shrine and honored as a Munmyobaehyang (문묘배향) sage-scholar where he became of the 18 sages of Korea (동방 18 현).
Split into simpler sentences: He's one of the famous members of the Gwangsan Kim clan and he was enshrined in the Confucian shrine where he was honored as a Munmyobaehyang (문묘배향) sage-scholar. Thus, he became of the 18 sages of Korea (동방 18 현).