Matthew 16:15-18
Christ had not yet built the church of God when this episode took place, though its formation had begun in that it had its Head, who had chosen and begun preparing a number of trainees, including the twelve apostles, to become part of it. Another year or two would pass before it would be prepared to begin carrying out its responsibility to preach the gospel to the world.
The epistle to the Hebrews did not exist when Jesus suffered a horrific beating and then was mercilessly crucified. Nor did it exist seven weeks later when Jews from all over the Mediterranean observed Pentecost in Jerusalem, and God gave a highly visible and audible demonstration of His awareness of this massive injustice while giving His Holy Spirit to those already loyal to our Savior.
The church did not officially exist until this last act, as God connected each of His chosen children with a truly holy, spiritual bond. Only then did the apostles and others begin to fulfill their assignments from Jesus of preaching the gospel of the Kingdom of God to the people of Jerusalem. Then the church began to grow significantly in purpose, numbers, and unity.
On that Day of Pentecost, as recorded in Acts 2:40-41, “with many other words [Peter] testified and exhorted them, saying, 'Be saved from this perverse generation.' Then those who gladly received his word were baptized; and that day about three thousand souls were added to them.” After God healed a man's crippling affliction at the Temple, one he had suffered since birth, Acts 4:4 reports, “many of those who heard the word believed, and the number of the men came to be about five thousand.” In Acts 6:1, Luke writes that the number of disciples within the church was multiplying, and the internal organization to care for the brethren was taking shape. The church, with a dramatic growth spurt, was actively coming into being, demonstrating to the unconverted Jews that it was a spiritual force to be reckoned with.
All this vital activity within the tiny organization named “the church of God” took place within about six months and changed the course of world history. It all occurred within a small, second-rate province of the mighty Roman Empire. Considering this thin slice of history, we know that the Creator God engineered this spiritual activity as He moved to reveal His creative purposes to more than just a few Jews within the Jerusalem area.
People's judgment of Christ depended on their perspective, like viewing a building from different angles. Those not worked with by God's Spirit saw some relationship but called Him John the Baptist, Elijah, or Jeremiah, and they were "way off base." The disciples, hearing His preaching and seeing Him up close, had a different perspective, given by God's calling through the Holy Spirit. No one can come to the Son unless God calls him (John 6:44), since the true Christ is not physically discerned among false ones; it must be given. Peter's proclamation that Jesus is the Messiah was a major step forward, correcting the Pharisees' and Sadducees' erroneous prophetic teaching, and showed that Simon Bar-Jonah was "favored." Yet verses 22-23 reveal the disciples were not fully convinced.