What is the meaning of Believe_in?

To accept as true, particularly without absolute certainty (i.e., as opposed to knowing).

To accept that someone is telling the truth.

To have religious faith; to believe in a greater truth.

To opine, think, reckon.

[with in]

  1. To ascribe existence to.

    To ascribe existence to.

    To believe that (something) is right or desirable.

    To have confidence in the ability or power of.

    singular present subjunctive of believen

    Source: wiktionary.org