BELIEVE!

be-lieve  /bɪˈliv/ Show Spelled Pronunciation [bi-leev] Show IPA verb, -lieved, -liev-ing.

–verb (used without object)
1.to have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so: Only if one believes in something can one act purposefully.

–verb (used with object)
2.to have confidence or faith in the truth of (a positive assertion, story, etc.); give credence to.
3.to have confidence in the assertions of (a person).
4.to have a conviction that (a person or thing) is, has been, or will be engaged in a given action or involved in a given situation: The fugitive is believed to be headed for the Mexican border.
5.to suppose or assume; understand (usually fol. by a noun clause): I believe that he has left town.

—Verb phrase
6.believe in,
a.to be persuaded of the truth or existence of: to believe in Zoroastrianism; to believe in ghosts.
b.to have faith in the reliability, honesty, benevolence, etc., of: I can help only if you believe in me.