He is a God who speaks. A God who seeks to communicate the ideas/principles/facts that are in his mind into our minds. The speech of God is about communicating the things that are on his mind into our minds. This is what makes christian conversation so beneficial: we get to see the ideas of God and their practical impacts upon the minds of the people around us. This, of course, demands a certain degree of discernment. However, we are to measure the things that they say over and against what the Scriptures say, rather than our own ideas.
Because we believe in a God who speaks, we are to always be on the lookout for the communication of God’s truths into our lives from the diverse angles of the christians who surround us. Fore to ignore that resource is to live on the premise that the God who speaks speaks to me alone.