Moses
Numbers 13:17ESV·traditional attribution

Moses sent them to spy out the land of Canaan and said to them, “Go up into the Negeb and go up into the hill country,

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 came unto the brook of Eshcol,.... Or "valley of Eshcol" (u), which is here so called by anticipation from the following circumstance; and perhaps had not this name given it, until the children of Israel were possessed of the land, and then they called it so, in memory of what was done here at this time; it was not far from Hebron, as...

Jamieson-Fausset-Brown Reformed @jfbcommentary

Get you up this way . . . , and go up into the mountain--Mount Seir (Deu 1:2), which lay directly from Sinai across the wilderness of Paran, in a northeasterly direction into the southern parts of the promised land.