Numbers 28:2-4

2Command the children of Israel, and say unto them, My oblation, my food for my offerings made by fire, of a sweet savour unto me, shall ye observe to offer unto me in their due season.

3And thou shalt say unto them, This is the offering made by fire which ye shall offer unto the LORD; he-lambs of the first year without blemish, two day by day, for a continual burnt offering.

4The one lamb shalt thou offer in the morning, and the other lamb shalt thou offer at even;