23, 24. Lamech said unto his wives—This speech is in a poetical form, probably the fragment of an old poem, transmitted to the time of Moses. It seems to indicate that Lamech had slain a man in self-defense, and its drift is to assure his wives, by the preservation of Cain, that an unintentional homicide, as he was, could be in no danger.

     21. Then came Peter to him, and said, Lord, how oft shall my brother sin against me, and I forgive him?—In the recent dispute, Peter had probably been an object of special envy, and his forwardness in continually answering for all the rest would likely be cast up to him—and if so, probably by Judas—notwithstanding his Master's commendations. And as such insinuations were perhaps made once and again, he wished to know how often and how long he was to stand it.