In the Old Testament, in Genesis 1, verses 1 to 3 we learn that:

In the beginning God created the heaven and the earth.

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.

And God said, Let there be light:
and there was light.

Then, in the New Testament, in John 1, verses 1-3 and 9 we learn that:

In the beginning was the Word,
and the Word was with God,
and the Word was God.

The same was in the beginning with God.

All things were made by him;
and without him,
was not any thing made that was made.

In him was life;
and the life was the light of men.

That was the true Light,
which lighteth every man that cometh into the world.