distinction

And even things without life giving sound, whether pipe or harp, except they give a distinction in the sounds, how shall it be known what is piped or harped?

Then sin increased among them greatly; until a man married his own sister, or daughter, or mother, and others; or the daughter of his father's sister, so that there was no more distinction of relationship, and they no longer knew what is iniquity; but did wickedly, and the earth was defiled with sin, and they angered God the Judge, who had created them.