3.  But readers, gifted with greater curiosity, are naturally inclined to probe into the question further.  How, they ask, can justice be satisfied seven times?  And what are the vengeances?  Are they for seven sins committed?  Or is the sin committed once and are there seven punishments for the one sin?  Scripture continually assigns seven as the number of the remission of sins.  “How often,” it is asked, “shall my brother sin against me and I forgive him?”  (It is Peter who is speaking to the Lord.)  “Till seven times?”  Then comes the Lord’s answer, “I say not unto thee, until seven times, but, until seventy times seven.” Matt. xviii. 21, 22.  Our Lord did not vary the number, but multiplied the seven, and so fixed the limit of the forgiveness.  After seven years the Hebrew used to be freed from slavery. Deut. v. 12.  Seven weeks of years used in old times to make the famous jubilee, Lev. xxv. 10. in which the land rested, debts were remitted, slaves were set free, and, as it were, a new life began over again, the old life from age to age being in a sense completed at the number seven.  These things are types of this present life, which revolves in seven days and passes by, wherein punishments of slighter sins are inflicted, according to the loving care of our good Lord, to save us from being delivered to punishment in the age that has no end.  The expression seven times is therefore introduced because of its connexion with this present world for men who love this world ought specially to be punished in the things for the sake of which they have chosen to live wicked lives.  If you understand the vengeances to be for the sins committed by Cain, you will find those sins to be seven.  Or if you understand them to mean the sentence passed on him by the Judge, you will not go far wrong.  To take the crimes of Cain:  the first sin is envy at the preference of Abel; the second is guile, whereby he said to his brother, “Let us go into the field:” Gen. iv. 8.  the third is murder, a further wickedness:  the fourth, fratricide, a still greater iniquity:  the fifth that he committed the first murder, and set a bad example to mankind:  the sixth wrong in that he grieved his parents:  the seventh, his lie to God; for when he was asked, “Where is Abel thy brother?” he replied, “I know not.” Gen. iv. 9.  Seven sins were therefore avenged in the destruction of Cain.  For when the Lord said, “Cursed is the earth which has opened to receive the blood of thy brother,” and “groaning and trembling shall there be on the earth,” Cain said, “If thou castest me out to-day from the earth, then from thy face shall I be hid, and groaning and trembling shall I lie upon the earth, and every one that findeth me shall slay me.”  It is in answer to this that the Lord says, “Whosoever slayeth Cain will discharge seven vengeances.” Gen. iv. 11, 12, 14, 15, LXX.  Cain supposed that he would be an easy prey to every one, because of there being no safety for him in the earth (for the earth was cursed for his sake), and of his being deprived of the succour of God, Who was angry with him for the murder, and so of there being no help for him either from earth or from heaven.  Therefore he said, “It shall come to pass that every one that findeth me shall slay me.”  Scripture proves his error in the words, “Not so;” i.e. thou shalt not be slain.  For to men suffering punishment, death is a gain, because it brings relief from their pain.  But thy life shall be prolonged, that thy punishment may be made commensurate with thy sins.  Since then the word ἐκδικούμενον may be understood in two senses; both the sin for which vengeance was taken, and the manner of the punishment, let us now examine whether the criminal suffered a sevenfold torment.