Even though you offer me your burnt offerings and grain offerings, I will not accept them; and the peace offerings of your fattened animals, I will not look upon them. Take away from me the noise of your songs; to the melody of your harps I will not listen. (Amos 5:22-23 ESV)
God is more interested in the heart that seeks Him than the things we do for Him. We see in Amos how God rejects the sacrifices and the worship of the people of Israel because their hearts are not right before Him. Our sacrifices and worship will only please God when we serve Him with a contrite heart-a heart that does not follow the desires of the flesh but of the spirit.
True worship comes from the heart and not from works. Works without true worship is ritualism.
Brethren, do not use your works to justify your worship but rather, let your heart justify your worship. It is my prayer in all things we do for God and man our heart will be right.