following citations from Matthew and the Mishnah reveal that Jesus was fully conversant with every detail of the debate over grounds for divorce within first-century Judaism: [Jesus says,] “It has been said, ‘Whoever divorces his wife, let him give her a certificate of divorce.’ But I say to you that everyone who divorces his wife, except for a matter of unchastity [parektos logou porneias], causes her to commit adultery; and whoever marries a divorced woman commits adultery.” Matthew 5:31–32, my