Paul is referring to the decent and wellordered way of life in the society of the faithful, where the relationship which obtains among the members of the body is maintained.
For it is required of the man of God, that in all his words and works he be perfect, and that in his life he be adorned with all exemplary and well-ordered behaviour,
Let all things be done decently and in order. Like S. Ignatius (Ep. ad. Philipp. et Tars.), S. Paul had a great care for good order in the Church, especially in things indifferent, both because this order is beautiful and decent in itself, and because it prevents confusion and disturbance, and also because it greatly edifies others, even unbelievers. See notes on Colossians 2:5.
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If we take a closer look at the origin of sin, I think that it is nothing else than the inordinate love by a rational creature of the things set in order by God. .
Nothing builds up as much as good order, peace and love, just as nothing is more destructive than their opposites. It is not only in spiritual affairs but in everything that one may observe this.
Again giving a blow to them who chose to behave themselves unseemly without cause, and to incur the imputation of madness; and who keep not their proper rank. For nothing does so build up as good order, as peace, as love; even as their contraries tend to pull down. And not only in things spiritual, but also in all others one may observe this. Thus whether it be in a dance, or a ship, or in a chariot, or a camp, if you should confound the order, and casting the greater out of their proper place, should bring in the lesser into their rank, you destroy all, and thus things are turned upside down. Neither let us then destroy our order, nor place the head below and the feet above: now this is done when we cast down right reason, and set our lusts, passions, and pleasure, over the rational part: whence violent are the billows, and great the confusion, and intolerable the tempest, all things being wrapt in darkness.
And, if you will, let us first examine the unseemliness which arises here...