F.B. Meyer emphasizes the importance of discerning true faith from counterfeit religion in his sermon 'Seeking Life Testing Leaders.' He warns that genuine faith requires self-denial and a commitment to the narrow path of the Cross, contrasting it with the easy allure of self-indulgence that ultimately leads to despair. Meyer asserts that true faith is evidenced by the good fruit it produces, highlighting that the worth of the gospel is demonstrated through the transformative lives of its followers. He encourages believers to evaluate their faith by the character it cultivates and the impact it has on the world.