Hey people, listen to me! I'll tell you the perfect truth! If somebody starts like that, then there is something wrong. There is no need to tell either the perfect truth or the absolute obvious. There must be a simple opinion, if there is one, and the person must conduct a reconciled, peaceful life.
When someone explains in full vehemence and is committed to something, he/she only reveals where he/she gets the money from. Nothing more. Pay 1% of your tax here! Pay the fee of church here, or Zakat! Buy this book and learn the secret to being rich! We'll show you the way!
Is it familiar for you? These are all deceptions of the proclaimer in order him/her to prosper, and you pay or offer your services. Because you are a victim of words. Let's see what are the ten most common methods used for verbal deception.

Lack of self-reference. Deceptive people often use language that minimizes references to themselves. One way to reduce self-references is to describe events in the passive voice. "The safe was left unlocked" rather than "I left the safe unlocked."
Verb tense. Truthful people usually describe historical events in the past tense. Deceptive people sometimes refer to past events as if the events were occurring in the present.
Answering questions with questions. Even liars prefer not to lie. Outright lies carry the risk of detection. Before answering a question with a lie, a deceptive person will usually try to avoid answering the question at all. Equivocation. The subject avoids an interviewer's questions by filling his or her statements with expressions of uncertainty, weak modifiers and vague expressions.
Oaths. Although deceptive subjects attempt to give interviewers as little useful information as possible, they try very hard to convince interviewers that what they say is true. Euphemisms. Many languages offer alternative terms for almost any action or situation. Statements made by guilty parties often include mild or vague words rather than their harsher, more explicit synonyms.
Alluding to actions. People sometimes allude to actions without saying they actually performed them.
Lack of Detail. Truthful statements usually contain specific details, some of which may not even be relevant to the question asked. This happens because truthful subjects are retrieving events from long-term memory, and our memories store dozens of facts about each experience.
Those who fabricate a story, however, tend to keep their statements simple and brief.
Narrative balance. A narrative consists of three parts: prologue, critical event and aftermath. The prologue contains background information and describes events that took place before the critical event. The critical event is the most important occurrence in the narrative. The aftermath describes what happened after the critical event. In a complete and truthful narrative, the balance will be approximately 20 percent to 25 percent prologue, 40 percent to 60 percent critical event and 25 percent to 35 percent aftermath. If one part of the narrative is significantly shorter than expected, important information may have been omitted. If one part of the narrative is significantly longer than expected, it may be padded with false information.
Mean Length of Utterance. Most people tend to speak in sentences of between 10 and 15 words.
When people feel anxious about an issue, they tend to speak in sentences that are either significantly longer or significantly shorter than the norm.

And (the unbelievers) plotted and planned, and Allah too planned, and the best of planners is Allah. (Quran 3:54)

Abdullah ibn Umar reported:
The Messenger of Allah, peace and blessings be upon him, said, “Whoever takes up arms against us is not one of us.”
In another narration, the Prophet said, “Whoever deceives us is not one of us.” Source: Ṣaḥīḥ al-Bukhārī 6659, Ṣaḥīḥ Muslim 98

Narrated 'Abdullah bin 'Amr:
The Prophet (peace be upon him) said, "Whoever has the following four (characteristics) will be a pure hypocrite and whoever has one of the following four characteristics will have one characteristic of hypocrisy unless and until he gives it up.
1. Whenever he is entrusted, he betrays.
2. Whenever he speaks, he tells a lie.
3. Whenever he makes a covenant, he proves treacherous.
4. Whenever he quarrels, he behaves in a very imprudent, evil and insulting manner."

Reference: Sahih al-Bukhari 34

Why am I telling you all this? Because the name Dajjal (Antichrist) in English means: deceptive.