The job is to kill the flesh. The strength we have is the spirit in us. And God has given us tools to finish the job. Yet to the flesh delight most christians are ignorant of the power of these tools and how to use them. Some attack the mountain with their bare hands and die in their folly. Others sit in the shadow of the mountain side polishing their tools till the rocks fall on them and crush them.
God has given us the tools to protect himself against deceit. When you use them the law of sin is flattened before uyou.
These great tools of the mind are: meditation & Private prayer