For in him [Jesus] dwelleth all the fulness of
the Godhead [theotēs] bodily. (Colossians 2:9, KJV)


The Greek word translated to "Godhead" or "Deity" is theotēs. It is a noun and the root word of theotēs is theos, which is obviously God in Greek.
Theotēs means the state of being God; deity, divinity or Godhead -- what it means to be God or what makes God, God; or the essence of God.

So this verse definitely proves Jesus is 100% God in essence and Being. This doesn't prove Jesus is the only person in the Godhead. Paul wrote in Greek, not English. He used the word "theotēs" not "Godhead". Although "Godhead" is a good translation, it sometimes leads to confusion or false interpretation.

Colossians itself makes the distinction between the Father and the Son as 2 divine persons:

† We give thanks to God, the Father of our Lord Jesus Christ, praying always for you, † (Col 1:3, NASB)

† Whatever you do in word or deed, do all in the name of the Lord Jesus, giving thanks through Him to God the Father. † (Col 3:17, NASB)

Colossians 2:9 in no way proves Jesus is the Father, but does prove exactly what nature Jesus has.

Indeed Colossians 2:9 is strong evidence in support that Jesus is nothing short of Almighty God. Who but YHWH alone has all the fullness of theotēs ? I would say no one else but YHWH. What about you?

If the Father and the Son both have all the fullness of theotēs, the essence of God, then it follows that they are both one in essence and that Jesus is Jehovah ontologically. They couldn't be 2 separate beings, they would have to be one Being.