Offer one lamb in the morning and the other at twilight,

Leviticus 3:7
If he is presenting a lamb for his offering, he must present it before the LORD.

Numbers 28:3
And tell them that this is the offering made by fire you are to present to the LORD as a regular burnt offering each day: two unblemished year-old male lambs.

Numbers 28:5
along with a tenth of an ephah of fine flour as a grain offering, mixed with a quarter hin of oil from pressed olives.

1 Chronicles 16:40
to regularly present burnt offerings to the LORD on the altar of burnt offerings, morning and evening, according to all that was written in the Law of the LORD, which He had commanded Israel to keep.

The one lamb shall you offer in the morning, and the other lamb shall you offer at even;