Charles Spurgeon Commentary Exodus 29:39-42

"The one lamb thou shalt offer in the morning; and the other lamb thou shalt offer at even: and with the one lamb a tenth part [of an ephah] of fine flour mingled with the fourth part of a hin of beaten oil, and the fourth part of a hin of wine for a drink-offering. And the other lamb thou shalt offer at even, and shalt do thereto according to the meal-offering of the morning, and according to the drink-offering thereof, for a sweet savor, an offering made by fire unto Jehovah. It shall be a continual burnt-offering throughout your generations at the door of the tent of meeting before Jehovah, where I will meet with you, to speak there unto thee." — Exodus 29:39-42 (ASV)

See, the lamb is the place of meeting; God comes to his people as his people come to him, with the morning and with the evening lamb.