The first touching point of God's revelation of His love in Jesus Christ is found in the absolute and uncompromising realization of the horror of the least sin in our lives. If the coming of Christ into this world means the forgiveness of sins absolutely, then it must mean that the least sin becomes all the worse for us; for our salvation is not a lessening of sin, but its total removal. That must of necessity mean that the least taint is great indeed, and that a semblance of the lives we are to lead can be found in St. Dominic Savio's motto: "Death before sin."
What results from that state is the adventure of life. This is life, and life in abundance.
If you think this is wrong then you have not read or understood the sermon on the mount.