In 1183 Balian and Baldwin supported Raymond against Guy of Lusignan, husband of Amalric's elder daughter Sibylla and by now regent for Baldwin IV, who was dying of leprosy. The king had his 5-year-old nephew Baldwin of Montferrat crowned as co-king in his own lifetime, in an attempt to prevent Guy from ascending. Shortly before his death in spring 1185, Baldwin IV ordered a formal crown-wearing by his nephew at the Church of the Holy Sepulchre. It was Balian himself—a notably tall man—who carried the child Baldwin V on his shoulder at the ceremony, signifying the support of Isabella's family for her nephew. Soon after, the eight-year-old boy became sole king. When he, too, died in 1186, Balian and Maria, with Raymond's support, put forward Maria's daughter Isabella, then about 14, as a candidate for the throne. However, her husband, Humphrey IV of Toron, refused the crown and swore fealty to Guy. Balian reluctantly also paid homage to Guy, while his brother refused to do so and exiled himself to Antioch. Baldwin placed Balian in charge of raising his son Thomas, the future lord of Ramla, who did not go with his father to Antioch. Dispute between Raymond and Guy Balian remained in the kingdom, as an advisor to Guy. At the end of 1186, Saladin, the sultan of Egypt and Damascus, threatened the borders of the kingdom after Guy's ally Raynald of Châtillon, Lord of Oultrejordain, had attacked a Muslim caravan. Saladin was allied with the garrison of Tiberias in the north of the kingdom, a territory held by Raymond III. Guy gathered his army at Nazareth, planning to besiege Tiberias, but Balian disagreed with this, and instead suggested that Guy send an emissary to Raymond in Tripoli, hoping the two could be reconciled before Guy made a foolish attack on Saladin's larger army. The first embassy was a failure and the situation remained unchanged throughout the early months of 1187. After Easter of that year, Balian, Gerard of Ridefort (Grand Master of the Knights Templar), Roger de Moulins (Grand Master of the Knights Hospitaller), Reginald of Sidon, and Joscius, Archbishop of Tyre were sent on a new embassy to Tripoli. During the journey they stopped at Balian's fief of Nablus, and Balian planned to remain behind briefly while the others went ahead. On May 1, the Templars and Hospitallers were defeated by Saladin's son al-Afdal at the Battle