There is an evil that does not appear as an evil at all. How often have you heard, "Well, I think -- thus and such, ot this and that"? Even when someone is mentioning a point of conduct expressed in out New Covenant, or even the Old Covenant we hear someone else say, "Well, I think...", and then elborating on how "they" see things regardless of what the Word of Truth says. The Word of Truth is our Holy Writings and records of letters writtent to the Church, giving us the attitude and expressions of how our Creator and God and our Savior view things. We can think and have an opinion about a lot of things, we can speculate too, but to override the Word of God by our own speculations or opinions is an evil many engage in -- in fact, at one time or another we have all done this. When our life is surrounded with so many uncertainties and our social order get lost in what is right and wrong then we all become our own rule and authority. If, however, we are professing believers then we should wake up and take the Word serious and seek out what is written already, what has already been decided as the definition of sin or evil in this world and then base what we can know on His Word, not our own. We are advised to do this very thing and warned not to go beyond what has already been written -- not my words, not at all, but words I do agree with.
(1Co 4:5-6) Therefore judge nothing before the appointed time; wait till the Lord comes. He will bring to light what is hidden in darkness and will expose the motives of men's hearts. At that time each will receive his praise from God. Now, brothers, I have applied these things to myself and Apollos for your benefit, so that you may learn from us the meaning of the saying, "Do not go beyond what is written." Then you will not take pride in one man over against another. NIV