Midrash su Salmi 115:15

Aiphra Hurmiz, the mother of King Sabur, sent a purse with dinars to R. Joseph, saying: "This shall be used for the greatest charity." And he deliberated what kind of charity should be considered the greatest. Abaye then said to him: "Since R. Samuel said", 'Orphans must not be taxed even for the redeeming of prisoners,' it is to be inferred that redeeming of prisoners is considered the highest charity." (Ib. b) Raba said to Rabba b. Mari: "Whence do the Rabbis infer that redeeming of prisoners is the greatest charity?" He answered: "From the following passage (Jer. 15, 2) Such as are destined to death, to death; to the sword, to the sword; to famine, to famine; to captivity, to captivity, and R. Jochanan said: 'AH that is mentioned in this verse is the harder; as, for instance, to be killed by the sword is severer than to die a natural death. If you wish I will prove it by common sense and if you wish I will prove it by a passage: By common sense: The one [who is put to death by the sword] is disfigured, and the one [who dies naturally] is not disfigured. And if you wish it can be proved by a passage (Ps. 116, 15) Precious in the eyes of the Lord is the [natural] death of His pious. And that famine is worse than the sword, if you wish I will prove it by common sense, and if you wish I will prove it by a passage; as to common sense, this one [who dies of hunger] suffers long pain, and that one [who dies by sword] does not suffer long pains. As for a passage (Lam. 4) That happier are they that are slain by the sword than those slain by hunger. Captivity however, is harder than all of them, for in it all [the before-mentioned sufferings] are included.' "