Amos 5:22

Though ye offer me burnt offerings and your meat offerings, I will not accept them: neither will I regard the peace offerings of your fat beasts.

Though offered to Him, burnt offerings and grain offerings will not be accepted, nor will the peace offerings of fat beasts be regarded with favor. The refusal comes because those who bring them remain polluted by sin in heart and will not turn from it in repentance. No outward rite can take the place of mercy, knowledge of God, and worship in holiness, for worship is accepted only when joined to a clean and humble heart.