Grace Believers and the Trinity

      For some strange reason there a some grace believers that are weak on the doctrine of the Trinity.  Yes, I know the word, "trinity" is not in the Bible, but I believe based on my study of the Bible that it is a valid doctrine in the Bible.  

     The word "trinity," as stated is not in the King James Bible, but a similar word is, "Godhead."  This word is mentioned, guess how many times in the King James Bible?  Three!  Consider the following:

(1) Acts 17:29 Forasmuch then as we are the offspring of God, we ought not to think that the Godhead is like unto gold, or silver, or stone, graven by art and man's device.

(2) Romans 1:20 For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:

(3) Colossians 2:9 For in him dwelleth all the fulness of the Godhead bodily.

Since "Trinity" means three, I find it amazing the word "Godhead" is mentioned only three times in the King James Bible.  For those that do not share my belief that God supernaturally used the King James translators to preserve His word in English, then one might argue that it is just a coincidence that "Godhead" shows up only three times.  Well, notice something else remarkable about the inspired text.  In Acts 17:29 the "Godhead" is not to be thought of in regard to how many things?  Three!  Note the three things listed in Acts 17:29, gold, silver, and stone.  

     Romans 1:20 takes the context back to creation in discussing the "Godhead."  In Genesis chapter one we see God refers to Himself in the plural "us" and "our."  Genesis 1:26 states, "And God said, Let us make man in our image, after our likeness: and let them have dominion over the fish of the sea, and over the fowl of the air, and over the cattle, and over all the earth, and over every creeping thing that creepeth upon the earth."  Adam of course had a physical body that was made in God's image as stated in Genesis chapter one.  Notice how the third reference to "Godhead" in Colossians 2:9 states in Christ dwelleth all the fullness of the Godhead bodily.  In Genesis one you have God mentioned as well as the Spirit of God in reference to the work of creation.  Colossians 2:9 seals the deal of the Trinity by showing that the bodily image of Adam had to be that of the Son, Jesus Christ.  So at creation, you have God the Father, God the Son, and God the Holy Spirit all present.

     In conclusion, most grace believers I know claim to be Bible believers, so I am not sure why a number of them seem to be week on the doctrine of the Trinity in light of the above passages, and of course there are many more passages that I could have cited defending the Trinity.