If the religious preachers' intention is preaching and advice, it must be out of compassion and benevolence rather than blaming and egotist. If preaching and advising is out of compassion and kindness, It is accepted by the hearts. The preacher must love the listeners and have an affection toward them, then he can preach them. One cannot be heartless and toward the audience and consider them abject and wretched, and also expect them to be affected by what he preaches.
source : erfan.ir