Jesus the defense lawyer?

This struck me today:

"But if anybody does sin, we have one who speaks to the Father in our defense - Jesus Christ, the Righteous One." 1 John 2:1b (NIV)

Jesus, the one that took my punishment, the one who has every right to expect me to not sin since his sacrifice wiped my slate clean, the one who watches me drag his name through the mud as I sin again, is speaking to the Father on my (our) behalf! Are you kidding me?

Wouldn't that be like you or I being the defense lawyer for the murderer of our child?

INCREDIBLE!