Moses
Numbers 13:19ESV·traditional attribution

and whether the land that they dwell in is good or bad, and whether the cities that they dwell in are camps or strongholds,

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. Orders given to send spies to search out the land of Canaan. It is here said, God directed Moses to send them (Num 13:1, Num 13:2), but it appears by the repetition of the story afterwards (Deu 1:22) that the motion came originally from the people; they came to Moses, and said, We will send men before us; and it was the fruit of their unbelief.

Commenting on Numbers 13:1-20

John Gill Reformed Baptist @doctorgill

And they returned from searching the land after forty days. The Targum of Jonathan adds, on the eighth day of the month Ab, which answers to part of July and part of August; so that this must be towards the latter end of July: some Jewish writers (k) say it was the ninth of Ab; hence the tradition, that it was decreed on the ninth...

Geneva Bible Notes Reformed @genevanotes

And what the land [is] that they dwell in, whether it [be] good or bad; and what cities [they be] that they dwell in, whether in tents, or in strong holds; (d) Plentiful or barren.