Genesis 1:1
In the beginning God created the heaven and the earth.

Do you see the triune God here?
No?
Neither does the Jew….irony at its finest.
God (Elohim) is plural) but “created” is singular. The verb must agree with the noun…just a rule, so we see the triune Presence here, jointly working in creation.
This is supported in the New Testament as the original creation fell into a chaotic state:

2 Corinthians 4:6
For God, who commanded the light to shine out of darkness, hath shined in our hearts, to give the light of the knowledge of the glory of God in the face of Jesus Christ.

Genesis 1:26a
And God said, Let us make man in our image, after our likeness:……

“Us” and “our” refer to
Spirit
Soul
Body
You should be able to see man’s triune nature is the “image” of God, busted by sin….until regeneration restores this image (a working, functional spirit)