God communicates with believers through His word and we communicate with God through prayer. Millions of believers are not hearing from God.
We are commanded to study His word. And it is impossible to know God’s will for our lives if we are not reading and studying Scripture.
Study to shew thyself approved unto God, a workman that needeth not to be ashamed, rightly dividing the word of truth.
2 Timothy 2:15
All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, thoroughly furnished unto all good works.
2 Timothy 3:16-17