Luk 3:21 Now when all the people were baptized, it came to pass, that Jesus also being baptized, and praying, the heaven was opened,
Luk 3:22 And the Holy Ghost, descended in a bodily shape like a dove upon him, and a voice came from heaven, which said, Thou art my beloved Son; in thee I am well pleased.
You missed the point. The word, “Trinity,” is not found in the Bible. Of course it is expressed...in much the same way as the notion of Mary as the New Eve is expressed.
http://www.freerepublic.com/focus/religion/3237145/posts?page=66#66