What does the Bible say about Jesus being sinless?

The Bible teaches that Jesus was without sin, a crucial aspect of His role as the perfect mediator for humanity. In 2 Corinthians 5:21, it is stated, 'For He hath made Him to be sin for us who knew no sin, that we might be made the righteousness of God in Him.' This highlights that Jesus, who lived a sinless life, took on the sin of humanity in order to exchange it for His righteousness. His perfection is essential because it qualifies Him to stand in our place, satisfying God's justice and holiness through His sacrificial death.