What does it mean to believe on the Son of God?

Believing on the Son of God, as interrogated by Jesus in John 9:35, encompasses a comprehensive faith in Christ's identity and mission. It means to trust fully in His divine nature as the Son of God and Savior, acknowledging that He is the one who has the power to redeem and reconcile us to the Father. This belief necessitates recognition of our own sinfulness and a reliance on His righteousness. The act of believing invokes both intellectual assent and heartfelt trust, as outlined in Romans 10:9, where Paul states that if we confess with our mouth the Lord Jesus and believe in our hearts that God raised Him from the dead, we shall be saved. Hence, belief in the Son directly ties to our salvation experience and our ongoing relationship with God.