The listing here of tenets for sinful Christianity is good, but not complete, There are others I have read elsewhere:
1. That all sin is not unrighteousness of the devil and evil. At least not, when sinful Christians do it, unlike evil unbelieving sinners.
But if ye have respect to persons, ye commit sin, and are convinced of the law as transgressors. For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all. For he that said, Do not commit adultery, said also, Do not kill. Now if thou commit no adultery, yet if thou kill, thou art become a transgressor of the law.
2. That the law of God is now dead on paper, so that doing it as written by the apostles, as that of James above, is not good, but evil.
3. That sinful Christians have no part in being saved and justified with God, except the part of now doing both good and evil, and not evil only.
They sometimes fulfill their heart's lust to sin, and sometimes refuse to do so. It's the ongoing 'struggle' of all sinners with lust for sin remaining in the heart, whether Christian or unbelieving.
4. Having no fellowship with God while sinning, is not having no salvation from God while sinning: Salvation and fellowship with God are not the same. Salvation is reconciliation to God, with or without His fellowship.
Other than these missing links, this rendering of sinful Christianity is a wonderful and amazing justification for not being justified by works, but by faith alone.
Yes, they are forever saved, and yes, they go on sinning unto the end of this life, and yes, they want to be more like Jesus as much as is humanly possible for sinners on earth, just not completely like Him:
And ye are complete in him, which is the head of all principality and power.
Epaphras, who is one of you, a servant of Christ, saluteth you, always labouring fervently for you in prayers, that ye may stand perfect and complete in all the will of God.
Which reminds me of another tenet:
5. Sinful Christians are never complete in Christ in this life, to be blameless in spirit, soul, and body. That is only in the resurrection of perfect living to come:
Ye are witnesses, and God also, how holily and justly and unblameably we behaved ourselves among you that believe:
And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ.
The soul and spirit, yes, but certainly not the body, And those who say otherwise are proud boasters, who may never actually say they have no sin, but they certainly think and act like it, which pride they must be delivered from for the sake of all our souls:
And Cain talked with Abel his brother.