How do we know Christ's sinlessness is true?

In 1 Peter 2:22, we see that Christ did no sin and neither was deceit found in His mouth. This matches the prophetic declarations about Christ found in Isaiah 53:9, emphasizing that He was perfect and without sin. His virgin birth and life of obedience serve as critical testimonies to His sinless nature, positioning Him as the only acceptable sacrifice. If Christ had sinned, He could not bear the sins of others; thus, His sinlessness is foundational to the Christian faith as it confirms His ability to take on the sins of those He redeems.