Final answer:
The number of speeches given by Joshua as he fulfilled his commission is not quantified in the biblical text, but his leadership and the fulfillment of God's commands through his actions are central themes in the book of Joshua.
Step-by-step explanation:
The commission of Joshua, as described in various passages of the Bible, includes multiple directives from God to conquer the lands of Canaanite tribes and is often expressed through the speeches and actions mentioned in the book of Joshua. These actions, commanded by God, led to the victory against the Canaanites, notably the fall of Jericho's walls in Joshua 6, the defeat of Ai in Joshua 8, and the destruction of several other kingdoms and peoples such as the Eglonites, Hebronites, and Debirites as described in Joshua 10. The accounts of these conquests and Joshua's leadership are seen as fulfilling the commands given by God to Moses and passed down to Joshua.
Throughout these narratives, Joshua is depicted as a leader who follows God's commands without question, and the text often emphasizes that the Lord's approval was with Joshua as he undertook these campaigns. The book of Joshua does not quantify the exact number of speeches given by Joshua, but his role as a leader and his fulfillment of God's commission are depicted through various instances of his communication and actions within the biblical narrative.