2Co 7:1 Having therefore these promises, dearly beloved, let us cleanse ourselves from all filthiness of the flesh and spirit, perfecting holiness in the fear of God.
Considering the great emphasis the New Testament places on holiness, godliness and righteousness, my answer would be no. The truth is not contained in only one verse.
Part of the reason we are having to deal with such vile sinfulness among our own members today is the acceptance promoted by the idea that since all of us are imperfect, our various imperfections are really no big deal. Men begin to justify themselves by measuring themselves by the deeds and failures of other men. God set a higher goal for us to strive to attain, to stretch out to meet.
The great Apostle Paul, with all of his sacrifices, labors, visions, and usefulness as a vessel yielded to the LORD, still said he had not "attained." But that did not keep him from reaching out to attempt that goal. "Sinless perfection" while we are still in this fleshly body is plainly bad doctrine. But that should not be used as an excuse for us to just wallow in the mire of unholiness.
Which is why I commented on the other thread when just the word "Holiness" was used when what was meant was a particular denominational movement. According to Titus, the true teaching of Grace will lead us to live "soberly, righteously, and godly in this present world."
1Thess 4:7 For God hath not called us unto uncleanness, but unto holiness.