Numbers 10:10
Also in the day of your gladness, and in your solemn days, and in the beginnings of your months, ye shall blow with the trumpets over your burnt offerings, and over the sacrifices of your peace offerings; that they may be to you for a memorial before your God: I am the LORD your God.
Numbers 28:2
Command the children of Israel, and say unto them, My offering, and my bread for my sacrifices made by fire, for a sweet savor unto me, shall ye observe to offer unto me in their due season.