When a pastor or Christian says "you are going to sin at some point in the future, there is no way around it," they are teaching this false doctrine and heresy.
That it is a false doctrine and heresy should be clear when we discover the fact that we are not obligated to obey the flesh (Romans 8:12 (kjv, NLT)) and that therefore it is possible to walk consistently, not after the flesh but after the Spirit, for an extended period of time; even for the rest of our lives (Luke 1:74-75).
For Jesus came to save us from our sins (Matthew 1:21) and to redeem us from all iniquity (Titus 2:14-15).
That it is a false doctrine and heresy should be clear when we discover the fact that we are not obligated to obey the flesh (Romans 8:12 (kjv, NLT)) and that therefore it is possible to walk consistently, not after the flesh but after the Spirit, for an extended period of time; even for the rest of our lives (Luke 1:74-75).
For Jesus came to save us from our sins (Matthew 1:21) and to redeem us from all iniquity (Titus 2:14-15).
Saint:
"Gather my saints together unto me; those that have made a covenant with me by sacrifice." - Psalm 50:5 KJV
"Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us:" - 1 Corinthians 5:7 KJV
"Ye also, as lively stones, are built up a spiritual house, an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ." - 1 Peter 2:5 KJV
Sinner:
"For all have sinned, and come short of the glory of God;" - Romans 3:23 KJV
"If we say that we have no sin, we deceive ourselves, and the truth is not in us." - 1 John 1:8 KJV
"All unrighteousness is sin: and there is a sin not unto death." - 1 John 5:17 KJV
"As it is written, There is none righteous, no, not one:" - Romans 3:10 KJV
Saints struggle with Sin:
"I find then a law, that, when I would do good, evil is present with me. For I delight in the law of God after the inward man: 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. O wretched man that I am! who shall deliver me from the body of this death? 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 7:21-25 KJV
"But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart." - Matthew 5:28 KJV
"For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:" - Ephesians 2:8 KJV
"Be ye followers of me, even as I also am of Christ." - 1 Corinthians 11:1-3 KJV
The correct conclusion can only be that sainthood (membership in the covenant of Christ) and sin (misalignment from righteousness) are not mutually exclusive when speaking about a person as a whole. Scripture goes into detail about the body dying but the spirit living through Christ: the Adam from earth and the Adam from heaven. When Christ speaks to the adulteress and states "sin no more", is Christ talking to the sinful body or the spirit within her? In the parable of the wheat, is the whole wheat saved? No. Only the purified fruit is while the chaff is separated and blown away.
Paul was a sinner. Paul was a saint. There is a part of Paul that is destined for death and a part of Paul that is destined for life. There is a part of the wheat that is destined for death and a part of the wheat that is destined for life.
We would be mistaken to say that one is by necessity wholly saintly or wholly sinful. Only by the completion of the purification could this be the case. The dichotomy of "one is either a saint or a sinner" (while interesting) does not follow scripture.
"Gather my saints together unto me; those that have made a covenant with me by sacrifice." - Psalm 50:5 KJV
"Purge out therefore the old leaven, that ye may be a new lump, as ye are unleavened. For even Christ our passover is sacrificed for us:" - 1 Corinthians 5:7 KJV
"Ye also, as lively stones, are built up a spiritual house, an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ." - 1 Peter 2:5 KJV
Sinner:
"For all have sinned, and come short of the glory of God;" - Romans 3:23 KJV
"If we say that we have no sin, we deceive ourselves, and the truth is not in us." - 1 John 1:8 KJV
"All unrighteousness is sin: and there is a sin not unto death." - 1 John 5:17 KJV
"As it is written, There is none righteous, no, not one:" - Romans 3:10 KJV
Saints struggle with Sin:
"I find then a law, that, when I would do good, evil is present with me. For I delight in the law of God after the inward man: 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. O wretched man that I am! who shall deliver me from the body of this death? 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 7:21-25 KJV
"But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart." - Matthew 5:28 KJV
"For by grace are ye saved through faith; and that not of yourselves: it is the gift of God:" - Ephesians 2:8 KJV
"Be ye followers of me, even as I also am of Christ." - 1 Corinthians 11:1-3 KJV
The correct conclusion can only be that sainthood (membership in the covenant of Christ) and sin (misalignment from righteousness) are not mutually exclusive when speaking about a person as a whole. Scripture goes into detail about the body dying but the spirit living through Christ: the Adam from earth and the Adam from heaven. When Christ speaks to the adulteress and states "sin no more", is Christ talking to the sinful body or the spirit within her? In the parable of the wheat, is the whole wheat saved? No. Only the purified fruit is while the chaff is separated and blown away.
Paul was a sinner. Paul was a saint. There is a part of Paul that is destined for death and a part of Paul that is destined for life. There is a part of the wheat that is destined for death and a part of the wheat that is destined for life.
We would be mistaken to say that one is by necessity wholly saintly or wholly sinful. Only by the completion of the purification could this be the case. The dichotomy of "one is either a saint or a sinner" (while interesting) does not follow scripture.
I don't see how "inevitable sin" would be a false doctrine.