The wisdom, courage, and faith shown by Joshua during the long conquest of Canaan must have strengthened the Israelites.
وَكَيْ يَنْجَحَ يَشُوعُ فِي تَعْيِينِهِ ،‏ ٱحْتَاجَ إِلَى ٱلْحِكْمَةِ ٱلْإِلٰهِيَّةِ بِٱلْإِضَافَةِ إِلَى صِفَتَيِ ٱلْإِيمَانِ وَٱلشَّجَاعَةِ .‏ —‏ تث ٣١ :‏ ​ ٢٢ ،‏ ٢٣‏ .‏