Our text says that you don't put new wine in old wineskins, everyone thetizes against the pain of life and fails to bring lasting change. I've become burdened for those in the church who have been saved in Christ but haven't conquered the sin nature of the past. Over time, many use their thoughts to justify their lack of change and misuse Scripture as evidence. God help us. Those who fail to grow as a new creation in Christ will find themselves becoming like an old wineskin.
Old wineskins are inflexible and hardened and unable to handle new wine.
New wine has tremendous power to expand and change the environment it touches. Old wineskins can't handle this change, and so resist. When a Christian quits growing and settles in with their comfortable ideas about God, they're in trouble. Self satisfaction and complacency is dangerous. Inflexibility and hardness becomes intolerant toward those who want to grow in Christ.