Moses
Numbers 11:1ESV·traditional attribution

And the people complained in the hearing of the LORD about their misfortunes, and when the LORD heard it, his anger was kindled, and the fire of the LORD burned among them and consumed some outlying parts of the camp.

John Calvin Reformed @genevareformer

1. And when the people complained, it displeased the Lord. Lat., “And the people was, as it were, fainting (fatiscentes,) if, was displeasing in the ears of Jehovah.” Fr. “Apres il adveint que le peuple fut comme gens discouragez, (margin, despitez,) ce que despleut aux aureilles de l’Eternel;” afterwards it came to pass that the people were as persons discouraged (or fretted) which displeased the ears of God.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The people's sin. They complained, Num 11:1. They were, as it were, complainers. So it is in the margin. There were some secret grudgings and discontents among them, which as yet did not break out in an open mutiny. But how great a matter did this little fire kindle!

Commenting on Numbers 11:1-3

John Gill Reformed Baptist @doctorgill

And when the people complained,.... Or "were as complainers" (p); not merely like to such, but were truly and really complainers, the "caph", here being not a note of similitude, but of truth and reality, as in Hos 5:10. This Hebraism is frequent in the New Testament, Mat 14:5.