A brilliant scholar and teacher, he had the spiritual maturity to be made Abbot of Drepung, taking responsibility for the material and spiritual well-being of Tibet's largest monastery at the age of nine. At 10 he led the Monlam Prayer Festival, giving daily discourses to the assembly of all Gelugpa monks. His influence grew so quickly that soon the monks at Sera Monastery also made him their Abbot and his mediation was being sought to prevent fighting between political power factions. At 16, in 1559, he was invited to Nedong by King Ngawang Tashi Drakpa, a Karma Kagyu supporter, and became his personal teacher. At 17, when fighting broke out in Lhasa between Gelug and Kagyu parties and efforts by local lamas to mediate failed, Sonam Gyatso negotiated a peaceful settlement. At 19, when the Kyichu River burst its banks and flooded Lhasa, he led his followers to rescue victims and repair the dykes. He then instituted a custom whereby on the last day of Monlam, all the monks would work on strengthening the flood defences. Gradually, he was shaping himself into a national leader. His popularity and renown became such that in 1564 when the Nedong King died, it was Sonam Gyatso at the age of 21 who was requested to lead his funeral rites, rather than his own Kagyu lamas.