How do we know that Jesus was sinless?

The Bible clearly states that Jesus Christ was without sin, a truth established in Hebrews 4:15 where it declares that He was 'in every respect tempted as we are, yet without sin.' In the life of Joseph, we see a perfect reflection of this characteristic. Throughout Joseph's story, especially noted is his resistance to temptation from Potiphar's wife, exemplifying a character aligned with holiness and virtue. Just as Joseph is portrayed in Scripture without any moral failure, so too is Jesus, who fulfilled the law perfectly, embodying the sinless nature required as our Savior. This sinless attribute is vital for the integrity of Christ’s atoning sacrifice, ensuring that He bore the sins of His people as the spotless Lamb of God.