'Nature' in the Bible

Because of this did God give them up to dishonourable affections, for even their females did change the natural use into that against nature;

For, when nations that have not a law, by nature may do the things of the law, these not having a law -- to themselves are a law;

and the uncircumcision, by nature, fulfilling the law, shall judge thee who, through letter and circumcision, art a transgressor of law.

for if thou, out of the olive tree, wild by nature, wast cut out, and, contrary to nature, wast graffed into a good olive tree, how much rather shall they, who are according to nature, be graffed into their own olive tree?