I do not sin every day and currently I am not abiding in any sins unto death (such as lying. Lust. hate, etc.).
For some, they do both good and evil at the same time pretending to uphold righteousness when in reality, they are not. I am not sure it is an issue for some. Sin. Some just are not overly concerned about it because they got their ticket to Heaven.
First, I don't think anyone can go even one day without sinning, at least by God's definition of sin. That's why we need a savior. If we could be sinless then Jesus died in vain for we could have attained righteousness without him just by not sinning.
Second, anyone who claims to be saved yet has no interest in a changed life, no interest at all in getting free from sin and no interest in being pleasing to God, is not truly saved. They may have repeated a prayer, but there was no surrender of their will to God's, no heart change. It's impossible for a spirit to be born again and still retain the same relationship to sin that was before the new birth.
Now they may still struggle with some sins but they want to be free from them. Paul said it like this, describing the struggle of a saved person against sin.
Romans 7:15-20 King James Version (KJV)[SUP]
15 [/SUP]For that which I do I allow not: for what I would, that do I not; but what I hate, that do I.
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16 [/SUP]If then I do that which I would not, I consent unto the law that it is good.
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17 [/SUP]Now then it is no more I that do it, but sin that dwelleth in me.
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18 [/SUP]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.
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19 [/SUP]For the good that I would I do not: but the evil which I would not, that I do.
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20 [/SUP]Now if I do that I would not, it is no more I that do it, but sin that dwelleth in me.
Paul then goes on in Chapter 8 of Romans to tell us how to win this struggle by turning our focus on the Spirit and the things of the Spirit rather than having our focus on our sins and trying to perfect our dead flesh.