God has graciously chosen to initiate relationship with human beings who, left to themselves, deny his power and even his very existence. He does this through revelation—through revealing himself to us.
But what is it that he reveals about himself? According to Erwin Lutzer, it is his character, his nature, and his will. I’ve heard it said that character is who you are when no one is looking. God reveals himself as someone who existed long before there was anyone looking, and then as now, his character was marked by love. He has always existed in a loving relationship of Father, Son, and Holy Spirit. We might say his nature is his attributes, or the qualities of his “godness.” And his will includes his desires for humanity. As the one who created us, he is the one who has the right to tell us how we ought to live.
How does God reveal all of this? Through what we call general revelation and special revelation. General revelation is what God reveals to all of humanity through what has been made and can be observed by all. Special revelation is what God reveals through special means—most notably through Scripture and its revelation of Jesus Christ. Praise God that, in his grace, he has chosen to reveal himself to us!