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From the first, Peter had believed Jesus to be the Messiah. Many others who had been convicted by the preaching of John the Baptist, and had accepted Christ, began to doubt as to John’s mission when he was imprisoned and put to death; and they now doubted that Jesus was the Messiah, for whom they had looked so long. Many of the disciples who had ardently expected Jesus to take His place on David’s throne left Him when they perceived that He had no such intention. But Peter and his companions turned not from their allegiance. The vacillating course of those who praised yesterday and condemned today did not destroy the faith of the true follower of the Saviour. Peter declared, “Thou art the Christ, the Son of the living God.” He waited not for kingly honors to crown his Lord, but accepted Him in His humiliation. – {DA 411.5}
Peter had expressed the faith of the twelve. Yet the disciples were still far from understanding Christ’s mission. The opposition and misrepresentation of the priests and rulers, while it could not turn them away from Christ, still caused them great perplexity. They did not see their way clearly. The influence of their early training, the teaching of the rabbis, the power of tradition, still intercepted their view of truth. From time to time precious rays of light from Jesus shone upon them, yet often they were like men groping among shadows. But on this day, before they were brought face to face with the great trial of their faith, the Holy Spirit rested upon them in power. For a little time their eyes were turned away from “the things which are seen,” to behold “the things which are not seen.” 2 Corinthians 4:18. Beneath the guise of humanity they discerned the glory of the Son of God. – {DA 412.1}
Desire of Ages, Ellen G. White, 1898, pg. 411-412