'Natures' in the Bible

For whilst we were under the thraldom of our earthly natures, sinful passions-- made sinful by the Law--were always being aroused to action in our bodily faculties that they might yield fruit to death.

in order that in our case the requirements of the Law might be fully met. For our lives are regulated not by our earthly, but by our spiritual natures.

For if men are controlled by their earthly natures, they give their minds to earthly things. If they are controlled by their spiritual natures, they give their minds to spiritual things.

Therefore, brethren, it is not to our lower natures that we are under obligation that we should live by their rule.