'Muttering' in the Bible

You will fall; while lying on the ground you will speak; from the dust where you lie, your words will be heard. Your voice will sound like a spirit speaking from the underworld; from the dust you will chirp as if muttering an incantation.

Rebelling against and denying the Lord,Turning away from [following] our God,Speaking oppression and revolt,Conceiving and muttering from the heart lying words.

Both the Pharisees and the scribes began muttering and complaining, saying, “This man accepts and welcomes sinners and eats with them.”

The Pharisees heard the crowd muttering these things about Him, so the chief priests and the Pharisees sent temple police to arrest Him.