1 John 3:5

But you know that he appeared so that he might take away our sins. And in him is no sin.

(v5, NIV)

Why did Jesus come? Jesus came to take away our sins. He paid for them, receiving for us God's righteous wrath that would've been upon us because of our sins. Because of him, we can receive his righteousness imputed to us. Because of him, we can have freedom and are no longer slaves to sin. He appeared so that he might take away our sins. We sin and we break the law. Well, lawlessness is sin. We all sin. However, Jesus takes away our sin. In addition, Jesus is without sin. There is no sin in him. If he was sinful, how could he take away our sins? If Jesus had sin, he would be a hypocrite. Also, he would not be paying for our sins, but would be paying for his own. In him is no sin and he came to take away our sins.