Numbers 11;1 And when the people complained, it displeased the Lord: and the Lord heard it:and his anger was kindled; and the fire of the Lord burnt asmong them, and consumed them that were in the uttermost parts of the camp.
Philippians 2;14 Do all things without murmurings and disputings.
Numbers 21; 8 And the Lord said unto Moses, Make thee a fiery serpent, and set it upon a pole, that every one that is bitten, when he looketh upon it, shall live.
John 3; 14 And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up: 15 That whosoever, believeth in him should not perish but have eternal life.
The serpent on the pole prefigured Jesus Christ.