Does the New Testament teach holiness?
Does Christ or any apostle endorse, tolerate or condone open sin?
The good news of the gospel is clear: REPENT of your sins, turn your life over to Christ, and He will save you - free gift. But you must change your ways, not God change His ways.
You don't get to keep sinning. And you don't get to change God's law to make your sin acceptable.
I often think of Christ's encounter with the woman who was about to be stoned. He asked that the one without sin to cast the first stone. Okay, great. Then, turning to the woman, says to her "go, and sin no more".
There is forgiveness for one's sins; but, you must acknowlege that you HAVE sinned, and, he admonishes us to "sin no more". If you are forgiven; but, then go back to the same sin -- you are back exactly where you started.
Amen and Amen!!!