Similarly, (Numbers 28:4) "the one lamb shall you offer, etc." What is the intent of this? Is it not written (Isaiah, Ibid.) "nor the beasts thereof sufficient for a burnt-offering"? What, then, is the intent of "The one lamb, etc."? For the sake of receiving reward.
Two Lambs Sacrificed Every Single Day in the Temple
Mekhilta Tractate Pischa 16:7