21 “No one sews a patch of unshrunk cloth on an old garment. Otherwise, the new piece will pull away from the old, making the tear worse. 22 And no one pours new wine into old wineskins. Otherwise, the wine will burst the skins, and both the wine and the wineskins will be ruined. No, they pour new wine into new wineskins.” (Mark 2:21,22)
The power of the Kingdom of God is knowing WHEN to do WHAT.
The Pharisees had a lot of man-made rules for good disciplines. Kingdom power is about knowing when to use those disciplines. It is about the law on the heart, not on stone tablets. There is a time to fast. There is a time to feast. (The subjects being addressed by the Pharisees in this passage.)
The new wineskin is this: knowing how to use good forms in timing with the rhythm of the Kingdom. Fasting is good. Feasting is good. Knowing when those forms take place is Kingdom power.