Rom 7:7 What shall we say then? Is the law sin? Certainly not! On the contrary, I would not have known sin except through the law. For I would not have known covetousness unless the law had said, "YOU SHALL NOT COVET."
And I guess Jesus and none of those pesky first Christian really understood the gospel because they really seem preoccupied with sin:
Mat_5:29 If your right eye causes you to sin, pluck it out and cast it from you; for it is more profitable for you that one of your members perish, than for your whole body to be cast into hell.
Joh_5:14 Afterward Jesus found him in the temple, and said to him, "See, you have been made well. Sin no more, lest a worse thing come upon you."
Joh_8:34 Jesus answered them, "Most assuredly, I say to you, whoever commits sin is a slave of sin.
Rom_3:20 Therefore by the deeds of the law no flesh will be justified in His sight, for by the law is the knowledge of sin.
Rom_6:12 Therefore do not let sin reign in your mortal body, that you should obey it in its lusts.
Jas_1:15 Then, when desire has conceived, it gives birth to sin; and sin, when it is full-grown, brings forth death.
1Pe 4:1 Therefore, since Christ suffered for us in the flesh, arm yourselves also with the same mind, for he who has suffered in the flesh has ceased from sin,
1Pe 4:2 that he no longer should live the rest of his time in the flesh for the lusts of men, but for the will of God.
1Jn_1:8 If we say that we have no sin, we deceive ourselves, and the truth is not in us.
The bible is obsessed with sin. The instructions of our Lord Jesus Christ and the first Christians are to overcome sin. That requires, as he scripture says, KNOWING what sin is so we're not deceived and don't fall into sin.
I know you don't mean it that way, but to blithely pretend that we don't sin and to make no effort at all to find, recognize and blot out that sin guarantees deception and sin.
When I study the thinking involved when I sin, I doscover it nearly always is associated with first struggling not to sin, then instead of placing faith in Christ, concentrating only upon not sinning, which results in my relying on my avoidance of sin for righteousness, instead of relying on His Providence in handling temptation.
Likewise, when I observe Christians demanding we persevere otherwise we really aren’t saved, I also see them rejecting what Christ provided in the Cross to instead favor their volition and perseverance to avoid sin, instead of faith in Christ. It’s a self-fulfilling prophecy of falling out of fellowship.