Albert Barnes Commentary Numbers 28:2

"Command the children of Israel, and say unto them, My oblation, my food for my offerings made by fire, of a sweet savor unto me, shall ye observe to offer unto me in their due season." — Numbers 28:2 (ASV)

My offering, and my bread ... - Or, my offering, even my bread, etc. Offering is here קרבן qorbân (Mark 7:11), a term that in itself has quite general significance, but is often especially applied, as apparently in this instance, to the grain offering which accompanied the sacrifices.

This grain offering connected itself, by its very nature, with the life of the Israelites in Canaan, not with their life in the wilderness; and it was added to the animal sacrifices as a sign that the people must dedicate to God their property and the fruits of their labor, as well as their own persons. See Numbers 15:2 note and Leviticus 21:6.