Deuteronomy 19:5

For example: when a man goes into the forest with his friend to cut wood, and his hand swings the axe to cut down the tree, and the iron head slips off the handle and strikes his friend so that he dies. He may flee to one of these cities and live.

Numbers 35:25

If you are innocent, the community must protect you from that relative. They must take you back to the city of refuge you fled to. You must live there until the death of the chief priest who was anointed with the holy oil.

2 Kings 6:5-7

One of them was cutting down a tree when suddenly his ax head fell in the water. It was a borrowed ax, he exclaimed to Elisha. What will I do?

Proverbs 27:12

A prudent man anticipates evil and hides; but the simple pass on, and are punished.

Isaiah 32:2

Each of them will be like a shelter from the wind and a place to hide from storms. They will be like streams flowing in a desert, like the shadow of a giant rock in a barren land.

Treasury of Scripture Knowledge

Summary

As when a man goeth into the wood with his neighbour to hew wood, and his hand fetcheth a stroke with the axe to cut down the tree, and the head slippeth from the helve, and lighteth upon his neighbour, that he die; he shall flee unto one of those cities, and live:

General references

Bible References

Head

2 Kings 6:5
One of them was cutting down a tree when suddenly his ax head fell in the water. It was a borrowed ax, he exclaimed to Elisha. What will I do?

He shall flee

Numbers 35:25
If you are innocent, the community must protect you from that relative. They must take you back to the city of refuge you fled to. You must live there until the death of the chief priest who was anointed with the holy oil.
Proverbs 27:12
A prudent man anticipates evil and hides; but the simple pass on, and are punished.
Isaiah 32:2
Each of them will be like a shelter from the wind and a place to hide from storms. They will be like streams flowing in a desert, like the shadow of a giant rock in a barren land.

General references

Numbers 35:22
Should you accidentally kill someone who was not your enemy. Maybe you shoved him or threw something at him but did not mean to kill him.