Believe (= to have faith)
Incorrect: Muslims believe at/to Allah.
Correct : Muslims believe in Allah.
Incorrect : I don't believe at astrology.
Correct : I don't believe in astrology.
Note: The verb ‘believe’ without any preposition means ‘to consider someone or something to be true'.
For example:
I don't believe you.
I quite believe what you are saying.
This is a stative verb and so it is not used in progressive forms.
Incorrect: I am not believing you.
Correct : I believe you.
