Isaías 5

Isaías 5:21

That the Black One may find no means of entrance, let us flee from every vanity, let us utterly hate the works of the way of wickedness. Do not, by retiring apart, live a solitary life, as if you were already [fully] justified; but coming together in one place, make common inquiry concerning what tends to your general welfare. For the Scripture saith, "Woe to them who are wise to themselves, and prudent in their own sight!" — The Epistle of Barnabas, Chapter IV