Having faith in GOD is one of the major things that is very crucial and important thing in our christian life. We should understand that faith is our gateway to getting any thing from GOD and without faith it is impossible to please GOD and its also impossible to receive from GOD and what this simply means is that you can not get anything from where you did not invest in because faith is seen as an investment in GOD
Although we can't see GOD with our physical eyes,it is through faith that we believe in his existence and that is a doctrine of JESUS.
According to the book of Hebrews 11 vs 16 the bible emphasized on the importance of having faith because it is through it we receive from GOD.
Of a truth and in the simplest way anyone who doesn't have faith will never be able to receive or be close to GOD in any way at all.
Faith is a spiritual currency that controls the physical legal tender (currency).
When the bible told us to ask of anything in the name of JESUS that we will receive whatever we ask for,it means that we should do that by faith