4 Bible Verses about Evil Principles

So, I find this principle [at work]: [Although] I want to do what is good, evil is [always] present [and often wins out].

Do not be fooled; bad company ruins good moral behavior.

For the Holy Spirit's law which provides [never ending] life for those in [fellowship with] Christ Jesus has freed me from the law that requires [spiritual] death for sinning.

but I see a different law [at work] in my body, waging [spiritual] warfare against the law in my mind. It brings me into captivity to the law of sin in my body.