First: Faith

Faith:

is believing and acknowledging Allah Almighty, what was  reported about Him, and acting accordingly. This includes the belief within the heart, speech by the tongue,  and actions of the human body parts.

Pillars of Faith:

Faith includes six pillars: belief in Allah Almighty, His angels, His books, His messengers, and the Day of Judgment, and to believe  in destiny, whether good or bad.