2 Timothy 3:1-5 English Standard Version
Godlessness in the Last Days
3 But understand this, that in the last days there will come times of difficulty. 2 For people will be lovers of self, lovers of money, proud, arrogant, abusive, disobedient to their parents, ungrateful, unholy, 3 heartless, unappeasable, slanderous, without self-control, brutal, not loving good, 4 treacherous, reckless, swollen with conceit, lovers of pleasure rather than lovers of God, 5 having the appearance of godliness, but denying its power. Avoid such people.
That is a long list of really ugly behavior. Some will do anything not to be seen as having any of those qualities. They will fixate on demonstrating the power. If they do not deny the power, they will have the power and the power becomes everything. If they have the power then they are not found in that list above.
How is that power demonstrated? Some will say you must speak in tongues. If you do not you are not saved. Some fancy the idea of handling poisonous snakes. That is insane but people have done it to prove something to themselves. Reckless is on the list and that is reckless. In some cases they become proud and arrogant in that pursuit and deny their own condition.
So what is this power that they seek but do not understand?
Romans 1:16 English Standard Version
The Righteous Shall Live by Faith
16 For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes,
The gospel has the power to save mankind from all those ugly truths about those conditions listed. The gospel is simple, too simple for some who deny its power to change them. Being arrogant some want to add the power to what they are without changing the inner man. That is not power, that is delusion.
Accept the gospel, take it to heart, and then see what the power of God can do to change that heart.