Deuteronomy 6:6-8
6 And these words which I command thee this day shall be in thine heart;
7 and thou shalt teach them diligently unto thy children, and shalt talk of them when thou sittest in thine house and when thou walkest by the way, and when thou liest down and when thou risest up.
8 And thou shalt bind them as a sign upon thine hand, and they shall be as frontlets between thine eyes.
That says to me that if we want revival, we need to stay in His word.
I'm sure that's only one aspect of it, but without His word, what do we have?