How do we know Jesus is the only sinless man?

Jesus Christ stands alone as the only sinless man in history, as affirmed in scriptures such as 1 Peter 2:22, which states, 'He committed no sin, neither was deceit found in his mouth.' Unlike Adam, who was created sinless but fell, Jesus remained pure and blameless throughout his life. His sinless perfection qualified Him to be the ultimate sacrifice for our sins, making Him the necessary mediator between God and man, as outlined in Hebrews 4:15, where He is described as one who was tempted in every respect, yet without sin.