Romans 8:7-8

The mind of the flesh (with its sinful pursuits) is actively hostile to God. It does not submit itself to God’s law, since it cannot, and those who are in the flesh (living a life that caters to sinful appetites and impulses) cannot please God.

As Christians, we can see the works of the flesh and the troubles it causes. We have the Holy Spirit working with our spirit to keep us on track. We will avoid sin when we keep our minds renewed with the Word and listen to our inner voice.