"And he spake also a parable unto them; No man putteth a piece of a new garment upon an old; if otherwise, then both the new maketh a rent, and the piece that was takenout of the new agreeth not with the old. And no man putteth new wine into old bottles; else the new wine will burst the bottles, and be spilled, and the bottles shall perish. But new wine must be put into new bottles; and both are preserved. No man also having drunk old wine straightway desireth new: for he saith, The old is better." (Luke 5:36-39)

In response to a question of why He and His disciples do not fast very often, Jesus responds with a series of parables that point to a dramatic change in content and form of worship in the New Testament gospel church.

In these examples, we find that it is not only improper but damaging to try and mix old and new. A new piece of cloth will shrink when washed and it will tear the old garment and make the whole worse. Animal skins once used to ferment wine will burst and spill new wine when the fermentation process starts again. 

By these two parables, Jesus shows that mixing old and new will not work and can even be dangerous. We can clearly see that the old covenant worship system, and the Pharisees perversion of it, is the old factor in this situation. 

Jesus is what is new! The Brisegroom/Messiah has now come. Everything in the Old Testament form of worship pointed toward the coming of Christ. Now that He is come, the old practices need to be put away and new practices begin. 

All that is necessary in worship today is a Cappella singing, preaching, and praying. We are freed from the law and its ordinances. We are free to worship thankfully in the security of sovereign grace. 

We should each examine the content and form of our worship. Do we seek to rob God of His glory by adding man's will in the scheme of salvation? Do we seek to please the flesh by adding ceremonial elements used in the Old Testament? If either of these is true, we are like those that prefer the old and don't want the new. 

That desire deceives us. Jesus is the new, and we should worship Him in simplicity not mixing in our works or custom of the old law.