A Protestant friend of mine said that the natural man cannot do anything in himself to please God, and then he defended this by quoting Romans 8:6-8. He asked me what my belief was on this topic from a Catholic perspective, but I was unsure of my answer so I told him that I would get back to him.
How should I answer him?
“The concern of the flesh is death, but the concern of the spirit is life and peace. For the concern of the flesh is hostility toward God; it does not submit to the law of God, nor can it; and those who are in the flesh cannot please God.”