"While each person of the Trinity has his own distinct personality, each is also the whole Godhead. Thus Christ could say: 'I am in the Father and the Father in me.'"
BIBLICAL CHRISTIANITY: An easier-to-read and abridged version of the classic "Institutes of the Christian Religion" by John Calvin first published in 1536.
Where is the fullness of the Godhead? In Christ (Colossians 2:9). It’s through our union with Christ that we receive the Father and the Holy Spirit. If you have the Son you have the Father as well (1 John 2:23) and through the Son the Holy Spirit is given (Acts 2:33).