Catholics tend to focus so much on avoiding sin as if avoiding sin makes us right with God.
Do you not struggle to avoid sin? All Christians should focus on avoiding sin. Jesus told sinners to go and sin no more.
It is true that we ask that the Lord in His mercy keep us free from sin, but knowing that we will not always be kept free from sin, we ask Him to look not on our sins but on our faith.
So we do sin. And it does matter because it is not pleasing to God. What matters more though is that we delight in the law of God and hate the sin that we do. And God in His righteousness will forgive us.
I take great comfort in what Paul wrote in chapter 7 of his letter to the Romans:
12 Wherefore the law is holy, and the commandment holy, and just, and good.
13 Was then that which is good made death unto me? God forbid. But sin, that it might appear sin, working death in me by that which is good; that sin by the commandment might become exceeding sinful.
14 For we know that the law is spiritual: but I am carnal, sold under sin.
15 For that which I do I allow not: for what I would, that do I not; but what I hate, that do I.
16 If then I do that which I would not, I consent unto the law that it is good.
17 Now then it is no more I that do it, but sin that dwelleth in me.
18 For I know that in me (that is, in my flesh,) dwelleth no good thing: for to will is present with me; but how to perform that which is good I find not.
19 For the good that I would I do not: but the evil which I would not, that I do.
20 Now if I do that I would not, it is no more I that do it, but sin that dwelleth in me.
21 I find then a law, that, when I would do good, evil is present with me.
22 For I delight in the law of God after the inward man:
23 But I see another law in my members, warring against the law of my mind, and bringing me into captivity to the law of sin which is in my members.
24 O wretched man that I am! who shall deliver me from the body of this death?
25 I thank God through Jesus Christ our Lord. So then with the mind I myself serve the law of God; but with the flesh the law of sin.
Romans 7:12-25
Of course.
Anyone who is a believer will struggle with sin, which is why the stupid scenario that so many Catholics put forth that we think that once we’re saved we can sin with impunity is so ridiculous.
That aside, it seems that you missed the point of my post.
It’s not about struggling with sin. It’s about the mentality that if we avoid sin, we are made right with God.
It takes far more than that to make us right before God. It cost Him His Son.