'Instinct' in the Bible

For when Gentiles who have no Law obey by natural instinct the commands of the Law, they, without having a Law, are a Law to themselves;

For I do not understand my own actions [I am baffled and bewildered by them]. I do not practice what I want to do, but I am doing the very thing I hate [and yielding to my human nature, my worldliness—my sinful capacity].

But these people, like irrational animals—creatures of instinct born to be caught and destroyed—speak blasphemies about things they don’t understand, and in their destruction they too will be destroyed,

But these people blaspheme anything they don’t understand. What they know by instinct like unreasoning animals—they destroy themselves with these things.