Abdullah Gymnastiar, widely known as Aa Gym (‘Elder Brother Gym’), rose to national prominence in the early 2000s as one of Indonesia’s most beloved Islamic preachers. His warm and practical preaching focused on Tawheed (the Oneness of Allah) and Manajemen Qolbu (“heart management”), a concept promoting emotional awareness, self-reflection, and inner growth. He gained a wide national following through television, radio, books, and public lectures, and his influence led to invitations from political parties to consider leadership roles. As of 2025, he has more than 20 million followers across social media platforms, continuing to draw attention with messages of faith and sincerity.