Numbers 16:1-3 Now Korah the son of Izhar, son of Kohath, son of Levi, and Dathan and Abiram the sons of Eliab, and On the son of Peleth, sons of Reuben, took men. And they rose up before Moses, with a number of the people of Israel, 250 chiefs of the congregation, chosen from the assembly, well-known men. They assembled themselves together against Moses and against Aaron and said to them, “You have gone too far! For all in the congregation are holy, every one of them, and the LORD is among them. Why then do you exalt yourselves above the assembly of the LORD?”
Acts 7:39 Our fathers refused to obey him, but thrust him aside, and in their hearts they turned to Egypt,
Malachi 1:13 But you say, ‘What a weariness this is,’ and you snort at it, says the LORD of hosts.
Acts 7:51 “You stiff-necked people, uncircumcised in heart and ears, you always resist the Holy Spirit. As your fathers did, so do you.
The complainer is further embarrassed by the moral company in which he finds himself. His is a spiritual affinity with some pretty shady characters: Cain, Korah, the sulky elder brother, the petulant Jews of the Book of Malachi who answered every fatherly admonition of God with an ill-humored “Wherefore have we” Wherein have we”” These are but a few faces that stand out in the picture of the disgruntled followers of the religious way. And the complaining Christian, if he but looks closely, will see his own face peering out at him from the background. Lastly, the believer who complains against the difficulties of the way proves that he has never felt or known the sorrows which broke over the head of Christ when He was here among men. After one look at Gethsemane or Calvary, the Christian can never again believe that his own path is a hard one. We dare not compare our trifling pains with the sublime passion endured for our salvation. Any comparison would itself be the supreme argument against our complaints, for what sorrow is like unto His” After saying all this we are yet sure that no one can be reasoned out of the habit of complaining. That habit is more than a habit—it is a disease of the soul, and as such, it will never yield to mere logic. The only cure is cleansing in the blood of the Lamb. (Tozer)