How do we know that Jesus Christ is our salvation?

Isaiah 12:2 declares, 'Behold, God is my salvation; I will trust and not be afraid.' This passage affirms Christ’s role as our Savior, emphasizing that He is the fulfillment of God's promise of salvation. The assurance of Jesus as our salvation comes from His accomplished work—He did not merely try to save us; He succeeded. Through His life, death, and resurrection, He provided full atonement for our sins, and thus God proclaims that those who believe in Him are justified and sanctified. The believer’s confidence rests not in their own works or righteousness but solely in Christ, who fulfilled all righteousness on our behalf, ensuring eternal security and freedom from fear of condemnation.