Mystical? I prefer supernatural or natural revelation.
Natural revelation is explained best in
Romans 1:20 New International Version (NIV)
20 For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse.
Moral law-
Romans 2:14-15 New International Version (NIV)
14 (Indeed, when Gentiles, who do not have the law, do by nature things required by the law, they are a law for themselves, even though they do not have the law. 15 They show that the requirements of the law are written on their hearts, their consciences also bearing witness, and their thoughts sometimes accusing them and at other times even defending them.)
Supernatural-
Matthew 8:3 New International Version (NIV)
3 Jesus reached out his hand and touched the man. “I am willing,” he said. “Be clean!” Immediately he was cleansed of his leprosy.
John 12:32 New International Version (NIV)
32 And I, when I am lifted up from the earth, will draw all people to myself.”
And finally the God Inspired written Word as the Bible. In which is very supernatural to exist in perfect harmony, survive 1000s of years of war and decay, fulfilled prophecies and still to this day just as life changing.