Well, I know that I didn't have faith until it was given unto me by the LORD. I didn't get it by hearing his Word, I didnt' get it by reading his Word, I got it when I was quickened by His invisible hand.
So did Abraham really believe the LORD?
Whoso sheddeth man's blood, by man shall his blood be shed: for in the image of God made he man. Genesis 9:6
So Abraham was going to sacrifice his child because the "Spirit" told him to?
Gen 22:11-12
11 And the angel of the LORD called unto him out of heaven, and said, Abraham, Abraham: and he said, Here am I.
12 And he said, Lay not thine hand upon the lad, neither do thou any thing unto him: for now I know that thou fearest God, seeing thou hast not withheld thy son, thine only son from me.
[See 2 Cor 11:14]