Fear (Of God)

Numbers 15
32 And while the children of Israel were in the wilderness, they found a man that gathered sticks upon the sabbath day.
33 And they that found him gathering sticks brought him unto Moses and Aaron, and unto all the congregation.
34 And they put him in ward, because it was not declared what should be done to him.
35 And the LORD said unto Moses, The man shall be surely put to death: all the congregation shall stone him with stones without the camp.
36 And all the congregation brought him without the camp, and stoned him with stones, and he died; as the LORD commanded Moses.

In the Old Testament, God's judgement is metted out on earth, as sinful events unfold.  Especially note the story of the captivities. 

In the New Testament, God's judgement, through Jesus, happens in heaven, on the judgement day.

Revelations 20
14 And death and hell were cast into the lake of fire. This is the second death.
15 And whosoever was not found written in the book of life was cast into the lake of fire.

Either way, God's judgement cannot be taken lightly.  

This is the second time I have considered the passage about the man of sticks who gets stoned by the children of Israel in the time of Moses.  Some passages are worth annual consideration.