Here are some interesting legends that reveal to us the birth of Lord Ganesha and how he came to be made Supreme God.
#Birth of Lord Ganesha:
According to the legend, Lord Ganesha was considered as the creation of Goddess Parvati, she created Ganesha out of the sandalwood dough that she used for her bath and breathed life into him. Legend has it that one day while bathing, Goddess Parvati asked her son to stand on guard and not to let anyone in. Just then her husband Lord Shiva returned from his tapasya and wanted to meet his wife but little Lord Ganesha, not knowing that it was his father, would not let Lord Shiva in. This angered Lord Shiva so much that he cut off the little child’s head. The commotion brought Goddess Parvati rushing out only to see her beloved son’s head chopped off by her husband. On realising what he had done, a horrified Lord Shiva promised his wife to bring their son back to life by placing the head of the first living thing that came his way. And it happened to be an elephant.
# Lord Ganesha became Supreme God:
A son with the head of an elephant further dismayed Goddess Parvati who felt that no one would pay any attention or worship Lord Ganesha. Lord Shiva then declared that Lord Ganesha would be worshipped first before any other God or Goddess. This angered the other Gods who complained about it to Lord Brahma. But the Lord did not entertain them saying that Lord Shiva (also known as Mahesh) was one of the trinity (Brahma, Vishnu, Mahesh) and the three of them held each other as equals. Only Lord Shiva could alter his own verdict. So the Gods then went to Lord Shiva and asked him to test their intelligence before declaring which God should be worshipped first. The Lord, who believed in playing fair, agreed and asked them to go round the world in their vahans (vehicles) and said that whoever came first, would be the one to be worshipped first. The vehicles of all the other Gods were faster than Lord Ganesha’s, whose vehicle was a mouse. So, happily they started out, confident that Lord Ganesha on his mouse would be the last one to complete the race! Lord Ganesha circumambulated his seated parents on his mouse declaring they being Supreme were the 'real world'. The other Gods could not dispute this and agreed that Lord Ganesha was certainly the most intelligent of them all! Ever since, before any religious function or auspicious occasion like marriage or inauguration, Lord Ganesha’s name is invoked with devotion.
#And the moon got cursed:
It so happened that Kuber, the wealthiest among the residents of Paradise, hosted a feast in honour of Lord Ganesha. It was a joyful moment for Lord Ganesha who feasted to an extreme so much that he felt his stomach would burst! When he went to pay obeisance to his parents, he was unable to prostrate before his parents and he turned turtle. Watching the scene from the sky was the moon, who burst out laughing at the sight. Goddess Parvati became livid at this ridicule of her beloved son, and cursed the moon that whoever sees him on Vinayak Chaturthi will be accused of a wrongdoing.
A story has it that on the Bhadrapad Chaturthi day, Lord Krishna accidentally saw the reflection of the moon in the milk and he was accused of stealing Samantak Mani, a very precious gem. In reality Jambavant, a bear, had found it in the forest and thinking that the shining gem would please his little daughter Jambavanti, had hung it over her cradle. It was only after Lord Krishna traced the gem to the forest and brought it back after a battle with Jambavant that he could prove his innocence. From then on, to avoid the evil effects of the curse, Goddess Parvati declared that those who worshipped Lord Ganesha, especially on the Bhadrapad Chaturthi day and listened to this story would not be affected by the curse.