But when King David had news of all these things he was very angry; but he did not make trouble for Amnon his son, for he was dear to David, being his oldest son.
In this way it is clear who are the children of God and who are the children of the Evil One; anyone who does not do righteousness or who has no love for his brother, is not a child of God.
Not being of the Evil One like Cain, who put his brother to death. And why did he put him to death? Because his works were evil and his brother's works were good.