Which aspect of George Muller's work involved caring for over 10,000 children?

George Muller is best known for founding the Ashley Downs Orphanage in Bristol, England, which was a significant aspect of his life and work. Through this orphanage, he provided shelter, education, and care for over 10,000 orphaned children during his lifetime. Muller's approach to running the orphanage was rooted in his deep faith and reliance on God for provision, which he believed was essential for his ministry.

This direct involvement in the care and upbringing of children illustrates not only his commitment to their well-being but also his innovative approach to social welfare at a time when such institutions were not widely supported or understood. His life’s work significantly impacted thousands and became a model for Christian philanthropy, focusing on the needs of the vulnerable in society.