'Grumbling' in the Bible

The Pharisees and their scribes began grumbling at His disciples, saying, “Why do you eat and drink with the tax collectors and sinners?”

Therefore the Jews were grumbling about Him, because He said, “I am the bread that came down out of heaven.”

There was much grumbling among the crowds concerning Him; some were saying, “He is a good man”; others were saying, “No, on the contrary, He leads the people astray.”

Do all things without grumbling or disputing;