Moses
Numbers 14:27ESV·traditional attribution

“How long shall this wicked congregation grumble against me? I have heard the grumblings of the people of Israel, which they grumble against me.

Matthew Henry Presbyterian @wholebiblehenry

We have here God's answer to the prayer of Moses, which sings both of mercy and judgment. It is given privately to Moses (Num 14:20-25), and then directed to be made public to the people, Num 14:26-35. The frequent repetitions of the same things in it speak these resolves to be unalterable. Let us see the particulars. I.

Commenting on Numbers 14:20-35

John Gill Reformed Baptist @doctorgill

Say unto them, as truly as I live, saith the Lord,.... The form of an oath, as in Num 14:21, as ye have spoken in mine ears, so will I do to you; what they had wished for, and expressed in the hearing of the Lord, he threatens them should be their case.

Keil & Delitzsch Lutheran @keilanddelitzsch

Num 14:27 This announcement commences in a tone of anger, with an aposiopesis, “How long this evil congregation” (sc., “shall I forgive it,” the simplest plan being to supply אשּׂא, as Rosenmüller suggests, from Num 14:18), “that they murmur against Me?”