Titus 2:13 presumably reveals a conceptual unity between “God” and Jesus: “of our great God and Savior, Jesus Christ.”20 Much of the debate over this verse congregates around the Greek grammatical construction mentioned earlier and the application of Granville Sharp’s Rule to it. Daniel Wallace in his forthcoming book
Granville Sharp’s Canon and Its Kin, concisely explains:
By way of conclusion, we are reminded of A. T. Robertson’s words: “Sharp stands vindicated after all the dust has settled.” As I began this investigation, I assumed that perhaps he was too bold, too premature in his assessment. But the evidence has shown that Robertson was right on the mark, and that Sharp’s canon has been terribly neglected and abused in the twentieth and twenty-first centuries. In the
least, it ought to be resurrected as a sound principle that has
overwhelming validity in all of Greek literature—when properly understood. Consequently, in Titus 2:13 and 2 Pet 1:1 we should at least recognize that, on a grammatical level, a heavy burden of proof rests with the one who wishes to deny that “God and Savior” refers to one person, Jesus Christ. (emphases in original)21
This issue, however, should not entirely distract us as we look at the textual evidence behind the translation of Titus 2:13. With that aside, the prior question remains, “Is the textual pedigree certain?”22 The answer is absolutely, “Yes!”23 This assessment still has its foes, but most grammarians, like Wallace, state that this text clearly indicates that one person is in view. (The only possible variant in it concerns the order of the last two words: “Jesus Christ” or “Christ Jesus.”) To my knowledge, not one jot or tittle ever has been penned against its
textual certainty, making Titus 2:13 an
explicit reference to Jesus as “God,” as it reads: “of our great God and Savior, Jesus Christ.”
excerpt from:
http://www.equip.org/article/jesus-as-god/