Mahajanaka is an ancient Bhuddist scripture depictinga practice of perseverance by a king named Mahajanaka. The original story was the last of the tenth in a series of Jataka scripture. It is a story of the last reincarnation of Bodhisattva before he was born Sithardha who became Bhudda. Mahajanaka was a great king who brought prosperityand wealth to his land, a city of Mithila. One day on his trip to a park, he saw two mango trees at the entrance. One had a lot of tasty fruits, the other had none. He tasted the sweet mango before he went into the park.When he came out, he found the tree with the tasty mangos torn down.Many of his subjects were swarming for good taste of sweet mango the poor tree could not withstand. But the one without fruit was left standing tall. Thus means good things are more attractive andjeopardy of frenzy crowd who often lack wisdom. In the old story, King Mahajanaka had a feeling of consolation to consolation to the incident. He then stipulated toseek transquility in priesthood. In rewriting the story, His Majesty King BhumibolAdulyadej said it was too soon for Mahajanaka to become a priest. Mahajanaka would have gotten his Dhamma enlightment easier by continue working to complete good deeds in worldly condition. His Majesty King Bhumibol emphasizes in his rewritingon a land called Suvarnabhumi where he mappes out geographic location of the city. He makes forecast on meteorogy and astrology by presenting his own drawing of four graphic maps. There are parts of his writing encouraging practice of perseverance in purity. It is an important merit needed for beneficiary in ordinary living. It becomes moral inheritant wellworth for younger Thai generation. All are rewritten in easy-to-read contemporary languages, both in Thai and English.