Demeter had taught Triptolemus the secrets of agriculture

There are numerous instances of Demeter supporting people in the past. Demeter's service to Celeus, King of Eleusis in Attica, is described in the Homeric hymns to her.

Demeter came to the palace to nurse Demophon and Triptolemus while she was off roaming in quest of her daughter. The older woman there was Demeter, and the king gave her a cordial greeting. In exchange for the King's favor, she made the older prince, Demophon, immortal. One night, the prince was taken on a fiery fire by Demeter, who forced him to drink ambrosia (divine nectar) and burn his mortal soul.

Demeter was forced to abandon her plan when the queen Metanira shouted aloud when she saw her son engulfed in flames. Demeter then decided to impart to Triptolemus, the younger prince, the knowledge of agriculture. Triptolemus pledged to teach anyone interested in learning the mysteries of agriculture after he had finished studying it with Demeter. That is how humans first became accustomed to agriculture. This story is known as one of the most interesting facts about Demeter.