Cosmas Indicopleustes : In that day I was delivered till morning as to a lion, he did so break all my bones—from day even to night was I delivered over; meaning: In the time then of my sickness, I was delivered over to the fever as to a terrible lion that was crushing all my bones, so that, as it raged, I was tortured incessantly from morning till evening and from evening till day-dawn — The Christian Topography, Book 8 Jerome : (Verse 13) I hoped until morning; like a lion, it has crushed all my bones. From morning until evening you will finish me. In the morning, he says, you will finish me until evening: I hoped until morning: which Job also says he endured in his distress and bodily torments (Job IV), when in daylight he awaited night, and in darkness awaited light, thinking that the punishments could be changed by the shifting of seasons. He knows this to be true who is burning with great fevers, whose internal fire, like that of a lion, consumes all his bones, and who does not think he will survive beyond the magnitude of his pain. — Commentary on Isaiah