Exodus 29:38

“And he sayeth, Behold the Lamb of God, which taketh away the sin of the world.” There were five animals which were brought to the altar, three that walk and two that fly; and it seems to be worth asking why John calls the Saviour a lamb and not any of these other creatures, and why, when each of the animals that walk is offered of three kinds he used for the sheep-kind the term “lamb.” The five animals are as follows: the bullock, the sheep, the goat, the turtle-dove, the pigeon. And of the walking animals these are the three kinds, bullock, ox, calf; ram, sheep, lamb; he-goat, goat, kid. Of the flying animals, of pigeons we only hear of two young ones; of turtle doves only of a pair. …

Now we find the lamb offered in the continual (daily) sacrifice. Thus it is written, “This is that which thou shalt offer upon the altar; two lambs of the first year day by day continually, for a continual sacrifice. The one lamb thou shalt offer in the morning, and the other lamb thou shalt offer at even, and a tenth part of fine flour mingled with beaten oil, the fourth part of a hin; and for a drink-offering the fourth part of a bin of wine to the first lamb. And the other lamb thou shalt offer in the evening, according to the first sacrifice and according to its drink-offering. Thou shalt offer a sweet savour, an offering to the Lord, a continual burnt offering throughout your generations at the door of tent of witness before the Lord, where I will make myself known to thee, to speak unto thee. …