"The strongest argument in favor of the gospel is a loving and lovable Christian."-Ellen G. White, The Ministry of Healing, p. 470. Of course, as she goes on to explain, "to live such a life, to exert such an influence, costs at every step effort, self-sacrifice, discipline."-Page 470. It does not come naturally or automatically. If our religion consists only in affirmations of belief and listening to sermons, it is largely useless.
James describes "religion" or "religious" in verses 26-27 with a word that suggests being unusually devout. Such an attitude has immediate, visible consequences, and people will notice the difference.
One obvious change will be our choice of words