Please view the following video before proceeding to read this post:
Isaiah 29:13 says: "Wherefore the Lord said, Forasmuch as this people draw near me with their mouth, and with their lips do honour me, but have removed their heart far from me, and their fear toward me is taught by the precept of men".
It is now time for us to get real with ourselves. Many people when first viewing the above video took offence. They were upset because they thought to themselves "What mockery!". Sadly, they would have misinterpreted the true intention of the "actors/worshippers" and missed the point that they were trying to make...they would have missed the point that this is the sad reality of the modern church. Although we may not sing these songs quite like what is depicted above, our hearts might sing them very often and we may not even realise it. God Himself said that many honour Him with their lips but are separated from Him in their hearts...that, that which is perceived to be reverence, is merely an act that was taught to them by mortal man! Please don't be angry with me, God is the One Who said it.