People can claim merit before God over trifles, and so they divide over trifles, they get Pharisaic over trifles. Paul is rebuking both sides. Power in Christ is not produced by man-made trifles or recipes, or disciplines. And one of the weaknesses of the church has been that so often men have felt that all their disciplines that they think up, their spiritual programs and their requirements that if you do this and that, and follow a schedule, you are going to be more holy. Well, those things are good if they help you spiritually, but they are not a necessity.