It's not about keeping the Law to earn salvation, it's about knowing who Messiah is, and becoming like Him. 

He promises to finish the work he started in us and that means he will make us look exactly like Himself.

If you don't even know the goal how will you get there?

A taught one is not above his teacher, but everyone perfected shall be like his teacher.
Luke 6:40

Being persuaded of this, that He who has begun a good work in you shall perfect it until the day of Yahusha Messiah.
Philippians 1:6

For whom He knew beforehand, He also ordained beforehand to be conformed to the likeness of His Son, for Him to be the first-born among many brothers.
Romans 8:29

And we proclaim, warning every man and teaching every man in all wisdom, in order to present every man perfect in Messiah Yahusha.
Colossians 1:28

And as we have borne the likeness of the earthy one, we shall also bear the likeness of the heavenly One.
1 Corinthians 15:49

What has been seen, cannot be unseen.