This quote from C. S. Lewis’ book, Miracles, speaks to the unity of Jesus Christ, the Son, the Word, to the Father God:
The title “Son” may sound “primitive” or “naif.” But already in the New Testament this “Son” is identified with the Discourse or Reasons or Word which was eternally “with God” and yet also was God. (John 1:1) He is the all-pervasive principle of concretion or cohesion whereby the universe holds together. (Col 1:17) All things, and specifically LIfe, arose within Him, (John 1:4) and within Him all things will reach their conclusion - the final statement of what they have been trying to express. (Eph 1:10)