John 20:28

“And Thomas answered and said unto him, etc.] Without examining his hands and side, and as astonished at his condescension and grace, and ashamed of his unbelief: my Lord and my God; he owns him to be Lord, as he was both by creation and redemption; and God, of which he was fully assured from his omniscience, which he had given a full proof of, and from the power that went along with his words to his heart, and from a full conviction he now had of his resurrection from the dead. He asserts his interest in him as his Lord and his God; which denotes his subjection to him, his affection for him, and faith in him; so the divine word is called in Philo the Jew, kuriov mou, “my Lord” f797.”

“Thomas answered and said unto him, My Lord and my God--That Thomas did not do what Jesus invited him to do, and what he had made the condition of his believing, seems plain from Joh 20:29 ("Because thou hast seen Me, thou hast believed"). He is overpowered, and the glory of Christ now breaks upon him in a flood. His exclamation surpasses all that had been yet uttered, nor can it be surpassed by anything that ever will be uttered in earth or heaven. On the striking parallel in Nathanael, see on Joh 1:49. The Socinian invasion of the supreme divinity of Christ here manifestly taught--as if it were a mere call upon God in a fit of astonishment--is beneath notice, save for the profanity it…”

“My Lord and my God - In this passage the name God is expressly given to Christ, in his own presence and by one of his own apostles. This declaration has been considered as a clear proof of the divinity of Christ, for the following reasons: 1. There is no evidence that this was a mere expression, as some have supposed, of surprise or astonishment. 2. The language was addressed to Jesus himself - “Thomas ...said unto him.” 3. The Saviour did not reprove him or check him as using any improper language. If he had not been divine, it is impossible to reconcile it with his honesty that he did not rebuke the disciple. No pious man would have allowed such language to be addressed to him. Compare…”

“And Thomas said, My Lord and my God - The disciples had said, We have seen the Lord. Thomas now not only acknowledges him to be the Lord, as he had done before, and to be risen, as his fellow disciples had affirmed, but also confesses his Godhead, and that more explicitly than any other had yet done. And all this he did without putting his hand upon his side. John 20:30”

“20:28 “My Lord and my God!” This was not an astonished exclamation but a proclamation of heartfelt belief. It concludes John’s declaration of Jesus’ deity that has framed the whole book (see 1:1-18).”

“My Lord: The disbelief of the apostle is the means of furnishing us with a full and satisfactory demonstration of the resurrection of our Lord. Throughout the divine dispensations every doctrine and ever important truth is gradually revealed; and here we have a conspicuous instance of the progressive system. An angel first declares the glorious event; the empty sepulchre confirms the women's report. Christ's appearance to Mary Magdalene shewed that he was alive; that to the disciples at Emmaus proved that it was at the least the spirit of Christ; that to the eleven shewed the reality of his body; and the conviction given to Thomas proved it the self-same body that had been crucified.…”