Genesis 37:20-22

20“Come on, let’s kill him and throw him into one of these cisterns. We can tell our father, ‘A wild animal has eaten him.’ Then we’ll see what becomes of his dreams!”

21But when Reuben heard of their scheme, he came to Joseph’s rescue. “Let’s not kill him,” he said.

22“Why should we shed any blood? Let’s just throw him into this empty cistern here in the wilderness. Then he’ll die without our laying a hand on him.” Reuben was secretly planning to rescue Joseph and return him to his father.