I agree Gino, the God of the old testament is the Word of God who became Jesus Christ.
I believe the Word of God is also the Holy Spirit of God.

 

Joh 1:1  In the beginning was the Word, and the Word was with God, and the Word was God.
Joh 1:2  The same was in the beginning with God.
Joh 1:3  All things were made by him; and without him was not any thing made that was made.

 

Gen 1:1  In the beginning God created the heaven and the earth.
Gen 1:2  And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.

 

God Bless

John Too