'Burnt offerings' in the Bible

"How do your voluminous sacrifices benefit me?" the LORD is asking. "I've had enough of burnt offerings of rams and the fat of well-fed beasts. I don't enjoy the blood of bulls, lambs, or goats.

these I will bring to my holy mountain, and make them joyful in my house of prayer. Their burnt offerings and their sacrifices will rise up to be accepted on my altar; for my house will be called a house of prayer for everyone."