In 1Cor 15:24, Christ at His glorious Parousia will destroy all evil “every rule and every authority and power.” That those things are evil which Christ will destroy, needs not be argued about.
In Eph 1:21, Christ reigns supreme “far above all rule and authority and power and dominion” in heavenly places. His reigns is over and above all rule and authority, whether it be good or bad, Paul is not concerned in Ephesians 1. Notice also in Eph 1:10 the uniting together of all things in Christ, similar to the “reconciliation” in Colossians 1:20.
In Eph 3:10 we read that it pleased God to display His wisdom through the Church, so that His wisdom may be known to “the rulers and authorities in the heavenly places.” The Lord wanted to demonstrate His wisdom in that He works all things after the counsel of His will and has brought salvation to the Gentiles and Christ through His blood has brought Jewish and Gentile together in one Body (Eph 2). God wanted to clearly demonstrate His victory over the wicked powers which had the unbelieving Gentiles, which now are in Christ, under their sway.
In Eph 6:12 I believe we read the clearest example that this phrase often refers to evil authorities. Paul says:
Eph 6:12 For we do not wrestle against flesh and blood, but against the rulers [τὰς ἀρχάς], against the authorities [τὰς ἐξουσίας], against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.
Our struggle against sin, is also our struggle against those powers. These rulers and authorities want to bring us down, but God has provided the way in which we can resist and overcome them.
There is a last use of the phrase under question in Titus 3:10 where Paul says that believers should “be submissive to rulers and authorities”. This does not refer to the rulers and authorities as in Eph 6:12, i.e the evil spiritual rulers and authorities, but it refers to the government, which was not really good in the time of the Romans. They were not pro-Christian, but anti-Christ. But still, Paul calls believers to be submissive and obedient to the government.
By now you may rightly question, why I went through this research of the phrase “rulers and authorities”. The reason I believe is, to demonstrate the clear context of Colossians and the sovereignty of Christ over the whole of the created order. Namely, that both good and evil rule and authority exists for His purpose and are under His reign.
In Him All Things Hold Together
The whole cosmos holds together and stays in exists because it is Christ who reigns. This is what Col 1:17 is teaching when it says that “in him all things hold together”. It is because of Him they were created. It is because of Him they still exist. It is for His purpose they exist.
The reason that order rather than chaos exists, is exactly because Christ reigns supreme over all things. It is He who is sovereign over every minute thing and it is He who is directing all things to their purpose (e.g. Heb 1:3; Eph 1:11).
We should keep this mind while we proceed further, that it is because of Christ that even the evil powers exist. It is to demonstrate His glory. It is He who keeps them in existence. Even they “hold together” in H...