Genesis 37:21

Reuben heard it, and delivered him out of their hand, and said, "Let's not take his life."

Genesis 42:22

Reuben answered them, saying, "Didn't I tell you, saying, 'Don't sin against the child,' and you wouldn't listen? Therefore also, behold, his blood is required."

Genesis 9:5

I will surely require your blood of your lives. At the hand of every animal I will require it. At the hand of man, even at the hand of every man's brother, I will require the life of man.

Genesis 35:22

It happened, while Israel lived in that land, that Reuben went and lay with Bilhah, his father's concubine, and Israel heard of it. Now the sons of Jacob were twelve.

Joshua 10:28

Joshua took Makkedah on that day, and struck it with the edge of the sword, with its king. He utterly destroyed them and all the souls who were in it. He left none remaining. He did to the king of Makkedah as he had done to the king of Jericho.

Matthew 10:28

Don't be afraid of those who kill the body, but are not able to kill the soul. Rather, fear him who is able to destroy both soul and body in Gehenna.

Treasury of Scripture Knowledge

Summary

And Reuben heard it, and he delivered him out of their hands; and said, Let us not kill him.

Bible References

Reuben heard

Genesis 35:22
It happened, while Israel lived in that land, that Reuben went and lay with Bilhah, his father's concubine, and Israel heard of it. Now the sons of Jacob were twelve.
Genesis 42:22
Reuben answered them, saying, "Didn't I tell you, saying, 'Don't sin against the child,' and you wouldn't listen? Therefore also, behold, his blood is required."

Not kill him

Joshua 10:28
Joshua took Makkedah on that day, and struck it with the edge of the sword, with its king. He utterly destroyed them and all the souls who were in it. He left none remaining. He did to the king of Makkedah as he had done to the king of Jericho.
Genesis 9:5
I will surely require your blood of your lives. At the hand of every animal I will require it. At the hand of man, even at the hand of every man's brother, I will require the life of man.
Matthew 10:28
Don't be afraid of those who kill the body, but are not able to kill the soul. Rather, fear him who is able to destroy both soul and body in Gehenna.