But in vain they do worship me, teaching for doctrines the commandments of men. – Matthew 15:9
When Jesus came into His ministry, He was displeased that the Pharisees were teaching the people their own interpretation of Gods doctrine, His teachings, His heart. The good that God had intended, was twisted and turned for their own benefit rather than to honor Him.
Our worship is hollow when we think of our own interests first rather than offering ourselves and our will in obedience and faith to His law and His love.