There an almost certain parallel between John 20:28 and Psalm 35:23:

28 And Thomas answered and said to Him, "My Lord and my God!" (John 20:28)

23 Awake, O Lord, and attend to my judgment, even to my cause, my God and my Lord. (Psalm 35:23, LXX)

Thomas said 6 of the same Greek words from Psalm 35:23 from the Septuagint. I want Unitarians to explain this.