Isaiah 45:19 "I have not spoken in secret, in a dark place of the earth: I said not unto the seed of Jacob, Seek ye me in vain: I the LORD speak righteousness, I declare things that are right."
John 18:20 "Jesus answered him, I spake openly to the world; I ever taught in the synagogue, and in the temple, whither the Jews always resort; and in secret have I said nothing."
God will never speak to a believer in secret. Don't believe it when someone comes to you in the name of Christ, saying that he or she has a private message from God. He or she is a false prophet.
Everything there is that God hath spoken is in the 66 books of the Holy Bible - every word of God, and a truly born again believer knows to discern the word, comparing spiritual things with spiritual.
Amen
Amen and Amen and Amen and Amen, absolutely very true