Ignorance is no excuse!

12 For all who have sinned without the law will also perish without the law, and all who have sinned under the law will be judged by the law.13 For it is not the hearers of the law who are righteous before God, but the doers of the law who will be justified. 14 For when Gentiles, who do not have the law, by nature do what the law requires, they are a law to themselves, even though they do not have the law. 15 They show that the work of the law is written on their hearts, while their conscience also bears witness, and their conflicting thoughts accuse or even excuse them 16 on that day when, according to my gospel, God judges the secrets of men by Christ Jesus. (Romans 2)
Sometime in my youth I remember being told: "Ignorance of the Law is no excuse." It was probably in reference to keeping traffic laws of some sort, but it has a far-reaching application.  Romans 1 and 2 have a theme of "no excuses." God has made His reality and will fully known to His creation, but we, without any valid excuse, keep ignoring and rebelling against Him.  In the paragraph above, Paul points out that the Gentiles, who often never heard of the Law of Moses, still obeyed the spirit of God's law, as it is "written on their hearts" and God has created us all with a sense of conscience.  They did not excuse sin on the basis of "ignorance of the Law."  There is something within all of us, based on our being created in the image of God, that cries out when we suppress, ignore, or rebel against God.  So, Paul says "stop making excuses!" Submit to God, His Will and His plan in Christ Jesus.