Peter said: Thou art the Christ, the Son of the living God. (Mt. 16:18, Mark 8:29)
Martha said: I believe that thou art the Christ, the Son of God, (John 11:27)
Hmmm....Martha said the same thing as Peter. Why didn't Jesus "bless" her as he did Peter? Where did Martha get the idea that Jesus was the Christ?
CHRYS; And truly if Peter had not confessed that Christ was in a peculiar sense born of the Father, there had been no need of revelation; nor would he have been worthy of this blessing for confessing Christ to be one of many adopted sons; for before this they who were with Him in the ship had said, Truly you are the Son of God. Nathanael also said, Rabbi, you are the Son of God. Yet were not these blessed because they did not confess such sonship as does Peter here, but thought Him one among many, not in the true sense a son; or, if chief above all, yet not the substance of the Father. But see how the Father reveals the Son, and the Son the Father; from none other comes it to confess the Son than of the Father, and from none other to confess the Father than of the Son; so that from this place even it is manifest that the Son is of the same substance, and to be worshipped together with the Father. Christ then proceeds to show that many would hereafter believe what Peter had now confessed, whence He adds, And I say to you, that you are Peter.
Martha speaks these words after Christ tells her "I am the Resurrection"; likewise Nathaniel does so after Christ shows him His omniscience. But Peter confesses without leading questions, as a revealed knowledge from the Father.