'Nature' in the Bible

For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature:

For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:

And shall not uncircumcision which is by nature, if it fulfil the law, judge thee, who by the letter and circumcision dost transgress the law?

For if thou wert cut out of the olive tree which is wild by nature, and wert graffed contrary to nature into a good olive tree: how much more shall these, which be the natural branches, be graffed into their own olive tree?