'Burnt offerings' in the Bible

To what purpose is the multitude of your sacrifices unto me? says the LORD: I am full of the burnt offerings of rams, and the fat of fed beasts; and I delight not in the blood of bullocks, or of lambs, or of male goats.

You have not brought me the sheep of your burnt offerings; neither have you honored me with your sacrifices. I have not caused you to serve with grain offerings, nor wearied you with incense.

Even them will I bring to my holy mountain, and make them joyful in my house of prayer: their burnt offerings and their sacrifices shall be accepted upon my altar; for my house shall be called a house of prayer for all people.