Albert Barnes Commentary 2 Timothy 3:5

"holding a form of godliness, but having denied the power therefore. From these also turn away." — 2 Timothy 3:5 (ASV)

Having a form of godliness. That is, they profess religion, or are in connection with the church. This shows that the apostle referred to some great corruption in the church, and there can be little doubt that he had his eye on the same great apostasy to which he refers in 2 Thessalonians 2 and 1 Timothy 4.

All these things to which he refers here have been practiced and tolerated in that apostate church, while no group of people, at any time, has been more zealous in maintaining a form of godliness—that is, in keeping up the forms of religion.

But denying the power thereof. This means opposing the real power of religion and not allowing it to exert any influence in their lives. It imposes no restraint on their passions and carnal propensities. In all respects, except in the form of religion, they live as if they had none.

This has been common in the world. The most regular and bigoted adherence to the forms of religion provides no evidence in itself that there is any true piety in the heart, or that true religion has any actual control over the soul. It is much easier for people to observe the forms of religion than it is to bring the heart under its controlling influence.

From such turn away. Have no dealings with them as if they were Christians; show no approval of their religion; do not associate with them. Compare 2 John 1:10–11; see also the notes on 2 Corinthians 6:17.