Avatars come to earth to re-establish Dharma
Avatars like Sai Baba has come to sow the seeds of faith of devotion in religion and in God. Many atheists doubt, question and once they experience they dedicate their lives to the teachings of the avatar.
Sai has come down to the earth in response to the prayers of saints, sages and spiritual aspirants for the restoration of Dharma. Mahatmas, Mahapurushas and jnanis will work with Sai in re-establishing righteousness and paving the path for peace.
Story based on above message
Saibaba (known as Swami by His devotees) through His discourses always emphasised devotees to develop love for God. He told various short stories to drive this point home. One such story is shared below.
https://saibalsanskaar.wordpress.com/2017/07/19/a-dear-devotee/
Source- Sathya Sai Speaks- Vol 1- Chapter 5