'Nature' in the Bible

But we see that the child of the slave-girl was born in the common course of nature; but the child of the free woman in fulfilment of the promise.

Yet just as, at that time, the child born in the common course of nature persecuted the one whose birth was due to the power of the Spirit, so it is now.

For the cravings of the lower nature are opposed to those of the Spirit, and the cravings of the Spirit are opposed to those of the lower nature; because these are antagonistic to each other, so that you cannot do everything to which you are inclined.

Against such things as these there is no law. Now those who belong to Christ Jesus have crucified their lower nature with its passions and appetites.

He who sows in the field of his lower nature, will from that nature reap destruction; but he who sows to serve the Spirit will from the Spirit reap the Life of the Ages.

For neither circumcision nor uncircumcision is of any importance; but only a renewed nature.