Numbers 13:1-2
13:1 The LORD said to Moses [while at Kadesh-Barnea, on the border of Canaan; cf. Deut. 1:21-22 re: Moses’ reflection on the events of this chapter],

13:2 “Send some men [from the leaders named in Num. 1–2; 7;10] to explore [cf. Num. 13:17-20 re: specific instructions given to the spies; spies explored Canaan for 40 days (13:25)] the land of Canaan, which I am giving to the Israelites. From each ancestral tribe send one of its leaders [persons of wisdom and authority (however, ten of these men turned out to be dismal failures)].”

Note:
• Sending the spies into Canaan | 13:1-16
• Instructions to the spies | 13:17-20
• The journey and return of the spies | 13:21-25
• Report on the exploration | 13:26-33
• The people rebel against Moses and Aaron | 14:1-5