Would we be ashamed of what we bring to the altar if God was physically, flesh and blood, sitting in front of us?
"...I have more than enough of burnt offerings, of rams and the fat of fattened animals; I have no pleasure in the blood of bulls and lambs and goats. Stop bringing meaningless offerings! Your incense is detestable to me..."
What do we offer? Is our offering; sacrifices that look good, that appear holy, or, are they parts of our lives that will transcend into purity and righteousness? Are we pulling our weight?