Faith, Why is it so important? Does Faith really make a difference in getting prayers answered and does it help one through their daily lives? Well faith is defined as belief or trust in something, so having faith is to trust in God and also believing in him and his promises. How I understand it is that faith plays such an important part in enriching our lives and getting prayers answered is that by believing and putting our trust in God we open up the door for God to work in our lives.