Live by the Spirit and you will not gratify the desires of the sinful nature.
Pauls use of the double negative in the Greek could be expressed in English by saying “You will absolutely not gratify the desires of your sinful nature ”
The fulfillment of this promise depends on the implementation of the command.*
Several years ago I decided I wanted to run a 5k with my daughter.
I read up on the ways to prepare for this adventure, I expressed my desire to do so, I even solicited the encouragement of my wife and daughter to put action to my plan
Three years later it was still only a want to.
Until recently when I downloaded the couch to 5K app. Phobe in hand I put on my jogging shoes, and hit the trail.
The app promises I will be able to run a 5k when I complete the training, but the implementation of that training is still up to me.
It is the same with walking in the freedom of the Spirit.
Just as training to run a 5k requires effort, a plan and follow through, walking in the Spirit requires active participation, determination to follow the leading of the Spirit (and an added bonus) in the power of the Spirit, everyday.
Those who follow the Spirits direction, in the Spirits power will not carry out the evil intentions of their sinful nature.
And we have the promise of God’s word that not only will we begin, we will finish the ultimate 5k.
So since we stand surrounded by all those who have gone before, an enormous cloud of witnesses, let us drop every extra weight, every sin that clings to us and slackens our pace, and let us run with endurance the long race set before us.
– Hebrews 12:1
IVP New Testament Commentary