He was inaccessible to man. Jesus Christ, who has always been with the Father, who is God Himself, brought Him out and made Him visible to all. He explained God. He was the exegete of God. In fact, the verb 'exegesis' in English comes from the verb exeegeomai .
Exegesis is to bring out the meaning of something that is difficult to understand.
And we know that the Son of God is come, and hath given us an understanding , that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ.