Hippolytus of Rome

For there was a great display of strength made by God in behalf of His first-born people from Egypt. For in very many ways was the land of the Egyptians chastised. That first people of the circumcision is meant by "my strength, and the first of my children: "even as God gave the promise to Abraham and to his seed. But "hard to bear with," because the people hardened itself against the obedience of God. And "hard, self-willed," because it was not only hard against the obedience of God, but also self-willed so as to set upon the Lord. "Thou hast waxed wanton," because in the instance of our Lord Jesus Christ the people waxed wanton against the Father. But "boil not over," says the Spirit, by way of comfort, that it might not, by boiling utterly over, be spilt abroad,-giving it hope of salvation. For what has boiled over and been spilt is lost.