Theology 1.0: What is the Trinity?

What is the Trinity? Do Christians worship three gods?
This is one of the most misunderstood ideas about Christianity. In fact, some critics of Christianity accuse Christians as worshipping three gods (i.e. polytheism) instead of one.

Although complicated to understand, Christians do not believe in three gods, or that God himself dons three masks in the course of human history. Rather, it is one God who revealed Himself in three persons-- the Father, the Son and the Holy Spirit.

One God
The Bible is clear that Christians worship one God. In Isaiah 44:6, God says there is no other God but Him, but he is the first and and the last. In Deuteronomy 6:4, the Bible states that God is one. And in case you were wondering, this view is echoed in the New Testament as well. (see Ephesians 4:6)

Pluarlity of God
Yet, the Bible also makes another thing clear-- there is pluality in the unity of God. In Genesis 1:26, God said, "let us make man in our own image". "Us" and "Our" aren't mistranslations or references to angels.

But what about the trinity, then? one might ask. The word "Trinity" does not is not found in the Bible, but one of the many clear references is in Matthew 28:19. Jesus told his followers to make disciples of all men, baptising them in the name of the Father, the Son and the Holy Spirit. This showed Jesus placed all these enitities as equality with God.

Conclusion
Although it might be difficult to comprehend and explain, the Christian God is one, but yet in three personalities.

For further references
historic case for trinity

Verses quoted
“This is what the LORD says—
   Israel’s King and Redeemer, the LORD Almighty:
I am the first and I am the last;
   apart from me there is no God." (Isaiah 44:6)

Hear, O Israel: The LORD our God, the LORD is one. (Deuteronomy 6:4)

one God and Father of all, who is over all and through all and in all (Ephesians 4:6)

Then God said, “Let us make mankind in our image, in our likeness, so that they may rule over the fish in the sea and the birds in the sky, over the livestock and all the wild animals, and over all the creatures that move along the ground.” (Genesis 1:26)

"Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit" (Matthew 28: 19)