And the Lord spake unto Moses and unto Aaron, saying, How long shall I bear with this evil congregation, which murmur against me? I have heard the murmurings of the children of Israel, which they murmur against me. Numbers 14:26-27

Murmuring and complaining can become the culture of any office, church or group.  The Israelites developed this culture of being dissatisfied, discontent and disenchanted by everything their leader did. They complained about everything until their complaints sounded like madness.

Complaining and murmuring is satanic in its very nature.  Demonic things often make no sense when they are analysed.  It does not make sense when people shout and rave for being delivered from slavery. The senseless and unreasonable outbursts of the Israelites revealed the presence of demons amongst them.

• Miriam developed leprosy because she murmured against Moses.