Only the Lord has this power. And so, if the truth that we have is to save us, then the Lord Himself must be within this truth. And the Lord is present in truth only when there is love or charity within the truth. There is no power in truth such as this. All it is, is mere knowledge.
Truth is powerful against evil only when there is love within it.
When we learn the truth because it is the Lord's, when we learn truth because it teaches us how to follow the Lord, when we learn truth because it shows us how to serve others, then, within this truth, there is humility, and there is love. There is the desire to follow the Lord by living a life of charity. And when, within truth, there is this love of the Lord, and this love of charity, then the Lord Himself can be present, present with the greatest power. When we learn the truth for the right reason, when we learn it so that we can obey the Lord and so that we can live a life of good, then this truth is the truth of good. And this truth has from the Lord greater power than we could ever imagine.