I've been delivered from the fear of posting the obvious. So, here goes ...
Jesus fulfilled the law and He can never sin.
Jesus manifests Himself through those people in whom He lives.
Jesus, whenever living through them, causes them to live as He lived.
Thus, Jesus sets us free from sin and fulfills the law, as we let Him live through us.
Therefore, those that fixate their focus on Jesus and abide in Him, have found that as they do so, they are miraculously doing what they could not do otherwise ... for in letting the Lord Jesus live through them they are taking a break from the vexation of sin and finding that (by the Spirit) their works are in perfect alignment with His laws.
From one moment to the next our focus can change, and so we may use any given moment (no matter what went before) to again focus upon the Lord and abide in Christ Jesus ... opening the door of our hearts and letting Him come out (of us) and play.
1 John 2:3-6
3 Now by this we know that we know Him, if we keep His commandments. 4 He who says, "I know Him," and does not keep His commandments, is a liar, and the truth is not in him. 5 But whoever keeps His word, truly the love of God is perfected in him. By this we know that we are in Him. 6 He who says he abides in Him ought himself also to walk just as He walked.
Romans 3:31
Do we then make void the law through faith? Certainly not! On the contrary, we establish the law.
Call on My name and confess all you have done. I will separate your sin from you and cast it away and remember it no more. ~ Jesus [Letters from God and His Christ - Volume 2 - Love and Forgiveness Awaits All Those Who Turn From the World to Christ]