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

Wesley's Notes

37:21 And Reuben heard it - God can raise up friends for his people, even among their enemies. Reuben of all the brothers had most reason to be jealous of Joseph, for he was the first - born, and so entitled to those distinguishing favours which Jacob was conferring on Joseph, yet he proves his best friend. Reuben's temper seems to have been soft and effeminate, which had betrayed him to the sin of uncleanness, while the temper of the two next brothers, Simeon and Levi, was fierce, which betrayed them to the sin of murder, a sin which Reuben startled at the thought of. He made a proposal which they thought would effectually destroy Joseph, and yet which he designed should answer his intention of rescuing Joseph out of their hands, probably hoping thereby to recover his father's favour which he had lately lost; but God over - ruled all to serve his own purpose of making Joseph an instrument to save much people alive. Joseph was here a type of Christ. Though he was the beloved Son of his Father, and hated by a wicked world; yet the Father sent him out of his bosom to visit us; he came from heaven to earth to seek and save us; yet then malicious plots were laid against him; he came to his own, and his own not only received him not, but consulted, This is the heir, come let us kill him. This he submitted to, in pursuance of his design to save us.

Matthew Henry's Concise Commentary

37:12-22 How readily does Joseph wait his father's orders! Those children who are best beloved by their parents, should be the most ready to obey them. See how deliberate Joseph's brethren were against him. They thought to slay him from malice aforethought, and in cold blood. Whosoever hateth his brother is a murderer, 1Jo 3:15. The sons of Jacob hated their brother because their father loved him. New occasions, as his dreams and the like, drew them on further; but this laid rankling in their hearts, till they resolved on his death. God has all hearts in his hands. Reuben had most reason to be jealous of Joseph, for he was the first-born; yet he proves his best friend. God overruled all to serve his own purpose, of making Joseph an instrument to save much people alive. Joseph was a type of Christ; for though he was the beloved Son of his Father, and hated by a wicked world, yet the Father sent him out of his bosom to visit us in great humility and love. He came from heaven to earth to seek and save us; yet then malicious plots were laid against him. His own not only received him not, but crucified him. This he submitted to, as a part of his design to redeem and save us.