Greek                  ἀπεκρίθη Θωμᾶς καὶ εἶπεν αὐτῷ· ὁ κύριός μου καὶ ὁ θεός μου
	Transliteration      Apekritheh thoomas kai eipen autoo •  ho kurios mou kai ho theos mou •
	Interlinear            Answered Thomas and said to him • the lord of me and the god of me •
	English                Thomas answered him, “My Lord and my God!”

Some believe that Thomas was addressing Jesus directly, thereby calling Jesus "God".  Others will claim he was merely making an exclamation.  From the English translation we can argue either way.  But in the original Greek there is more information.

Let's imagine we are Greek and have a friend called Markos.  If we talk about him, or refer to him, we'll call him Markos.  But when speaking to him we'll call him "Marke".

This is because

	Fact 1    Greek uses the Vocative case (Marke, Kyrie etc) when speaking directly TO someone.  Sometimes this is translated into English as "O Mark" or "O Lord".
	Fact 2    Greek uses the Nominative (in this case Markos, Kurios) or other cases (Kurion, Kurio etc) when talking ABOUT someone.

In the Christian Greek Scriptures (also known as the New Testament) Our Lord is always called Kurie when he is directly addressed, otherwise Kurios (or its other forms) when he is referred to.

	A list of all uses of the cases of Kurios, Kyrie etc in the Gospels is listed here.
	A list of the use of just Kurie throughout the Christian Greek Scriptures is here.

We see that is all instances where Jesus is directly addressed, he is called Kurie, never Kurios. No exceptions.

(Perhaps the most famous instance is where he is addressed "Kurie Eleison" ( κύριε, ελέησόν) at Matt 17.15 "Lord have mercy" as in various choral works so entitled.)

Thomas was referring to the Lord God, the one Jesus also called "my God".

	(John 20:17) . . .‘I am ascending to my Father and your Father and to my God and your God.’”
	(Revelation 3:12) . . .“‘The one that conquers—I will make him a pillar in the temple of my God, and he will by no means go out [from it] anymore, and I will write upon him the name of my God and the name of the city of my God, the new Jerusalem which descends out of heaven from my God, and that new name of mine.

This fact is not obvious in the English translation, but is very clear in Greek.

	Zech 6.4 et respondi et dixi ad angelum qui loquebatur in me quid sunt haec domine mi
	Rev 7.14 et dixi illi domine mi tu scis et dixit mihi hii sunt qui veniunt de tribulatione magna et laverunt stolas suas et dealbaverunt eas in sanguine agni et al).