But what about you?” he asked. “Who do you say I am?” Simon Peter answered, “You are the Messiah, the Son of the living God.” Matthew 16:15-16
The word “you” is plural here, which means Peter is a representative of the entire assembly of apostles. Christ is not just asking Peter.
Jesus’ point in pressing this question of His identity is to get the disciples to recognize Him as the Messiah. This is the first time the disciples correctly identify Jesus as the Messiah. It was important because His disciples were all Jews by heritage and had spent their entire lives waiting for the Messiah.
The “Son of the living God” refers to Jesus’ deity. Several factors point to this conclusion: (1) He was born of a virgin; (2) He was called Immanuel, meaning “God with us”; (3) the title in Greek is emphatic: “the Son of the God, the living One”; and (4) later passages describe Christ as God (in all four of the Gospels).
God’s blessings on your day…