Study the anthropology of man as provided in His Word.
It took the Church some 400 years just to get through the doctrine of the Trinity. It is a basic and worthy study.
Some have described it colloquially in this fashion:
God the Father Wrote the Play (His Plan).
God the Son performs the play.
God the Holy Spirit focuses the spotlight on God the Son throughout the play.
One God, three Persons, and man was made in His image, with a body, soul and spirit.
**God the Son**
**God the Holy Spirit**
Those phrases were never used by Jesus Christ or his apostles. Are you wiser than they in your efforts to define God?