Catena Aurea on John 1:29–31: Origen

But whereas five kinds of animals are offered in the temple, three beasts of the field, a calf, a sheep, and a goat; and two fowls of the air, a turtle dove and a pigeon; and of the sheep kind three are introduced, the ram, the ewe, the lamb; of these three he mentions only the lamb; the lamb, as we know, being offered in the daily sacrifice, one in the morning, and one in the evening. But what other daily offering can there be, that can be meant to be offered by a reasonable nature, except the perfect Word, typically called the Lamb? This sacrifice, which is offered up as soon as the soul begins to be enlightened, shall be accounted as a morning sacrifice, referring to the frequent exercise of the mind in divine things; for the soul cannot continually apply to the highest objects because of its union with an earthly and gross body. By this Word too, Which is Christ the Lamb, we shall be able to reason on many things, and shall in a manner attain to Him in the evening, while engaged with things of the bodyt. But He Who offered the lamb for a sacrifice, was God hid in human form, the great Priest, He who saith below, No man taketh it (My life) from Me, but I lay it down of Myself: (John 10:18) whence this name, the Lamb of God: for He carrying our sorrows, (Isaiah 53:4. 1 Pet. 2:24.) and taking away the sins of the whole world, hath undergone death, as it were baptism. (Luke 12:50.) For God suffers no fault to pass uncorrected; but punishes it by the sharpest discipline.