With all due respect, what do these words encourage apart from prayer? To an unbeliever, they're not encouraging words. To a believer, they are an affirmation that he or she can make difference by praying.Encouraging Words....
The earnest prayer of a righteous person has great power and produces wonderful results.
Does it matter to you whether the words are true or not? What if the claim could be tested? Would you want to know the results, even if they contradicted the claim? If you love truth, I think that your answer has to be "yes." Do you disagree?