When you have to check into a mental hospital.
I believe that the Mormons (at least the Church of Jesus Christ of Latter-day Saints) are speaking the truth of God. Of course, that may just be because I am an LDS, but I still strongly know and believe that we are speaking the truth about God.
In the Bible, God communicated with Moses through a burning bush and directly speaking to him.
Certainly, Catholics are required to intercede directly with God. The priest is there as God's chosen emissary. Normally, when God is speaking directly with a person, He is speaking through some means: the Bible, the priest, the Mass, etc.
They can. But never completely, and the only reason they do know God a little, is because God reveals Himself to them: through the Bible and through prayer!
This was through God speaking to him in a dream.
Both, you are to know mentally the the power and glory of our lord God and also truthfully know and believe it in your heart.
Jesus came to know that he was the Son of God through his spiritual experiences and teachings from God.
God at Mt. sinai. Not through Moses, but God himself speaking to the entire Jewish populace (about 2.3 million people)
In the Gospels, God is portrayed as speaking through Jesus, who taught and performed miracles to demonstrate God's power and love. Jesus used parables and direct statements to convey God's message of love, forgiveness, and salvation to the people.
Some people believe that God works through revelations, and could show someone who you were going to marry. Scientifically speaking, this has not been proven.
In the Bible, God spoke to Noah directly, not through a dream. God communicated His instructions for building the ark and saving Noah's family from the impending flood by speaking to Noah directly.
He does! And you can know for yourself through prayer.