How do we know Jesus is the Son of God according to John?

Throughout the Gospel of John, various signs, such as turning water into wine and raising Lazarus from the dead, serve to affirm Jesus' identity as the Son of God. John emphasizes that these signs are not mere miracles but are meant to lead the audience to a deeper understanding of who Jesus is—fully God and fully man. Additionally, the repeated 'I am' statements in John reveal His divine authority and His intimate relationship with the Father, asserting His preexistence and essential unity with God. John makes clear that recognizing Jesus as the Son of God is foundational to receiving life through Him.