Is the belief and worship of a Deity one of the principles of natural religion?
Yes.

For all people will walk every one in the name of their God,
Micah 4:5

But is it more strongly inculcated in the divine word?
Yes.

Worship the Lord,
Psalm 29:2

Did the sin of having many gods prevail in the early ages of the world?
Yes.

Wherefore hast thou stolen my gods?
Genesis 31:30

And were God’s own people soon infected with it?
Yes.

Up, make us gods,
Exodus 32:1

Is this sin absolutely forbidden in the first commandment?
Yes.

For first of all the commandments is this, hear O Israel, the Lord our God is one Lord,
Mark 12:29

And was it severely punished in those that were guilty of it?
Yes.

For the Lord plagued the people because they made the calf,
Exodus 32