We are not "two men" -- bipolar?? -- with one foot in righteousness and the other in sin. 2 Corinthians 5:17 says (very, very clearly): "If anyone is in Christ he is a new creation; what is old has passed away... You can't be alive in Christ and alive in sinful flesh.
I agree to a point, so take up your cross daily, and mortify the deeds of the flesh.
Romans 8:10-13
10 And if Christ be in you, the
body is dead because of sin; but the
Spirit is life because of righteousness. 11 But if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead shall
also quicken your mortal bodies by his Spirit that dwelleth in you. 12 Therefore, brethren, we are debtors, not to the flesh, to live after the flesh. 13 For if ye live after the flesh, ye shall die: but if ye through the Spirit do
mortify the deeds of the body, ye shall live.
Let me ask you this, do you commit sin? Be careful how you answer this.
1 Corinthians 3:3
3
For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?
Galatians 5:13-24
13 For, brethren, ye have been called unto liberty;
only use not liberty for an occasion to the flesh, but by love serve one another. 14 For all the
law is fulfilled in one word, even in this;
Thou shalt love thy neighbour as thyself. 15 But if ye bite and devour one another, take heed that ye be not consumed one of another. 16 This I say then,
Walk in the Spirit, and ye shall not fulfil the lust of the flesh. 17 For the flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other:
so that ye cannot do the things that ye would. 18 But
if ye be led of the Spirit, ye are not under the law. 19 Now the works of the flesh are manifest, which are these;
Adultery, fornication, uncleanness, lasciviousness, 20 Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies, 21 Envyings, murders, drunkenness, revellings, and such like: of the which I tell you before, as I have also told you in time past, that
they which do such things shall not inherit the kingdom of God. 22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith, 23 Meekness, temperance: against such there is no law. 24 And they that are Christ's have
crucified the flesh with the affections and lusts.
Galatians 6:7-8
7 Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap. 8 For he that
soweth to his flesh shall of the flesh reap corruption; but he that
soweth to the Spirit shall of the Spirit reap life everlasting.
If we are walking in the spirit at all times then we would always be producing the fruit of that spirit. But I see the fruit of the flesh also in Christians. So Paul was not just making a hypothetical statement. He was saying that we quite literally have to deal with the flesh and spirit that are at war with each other.
In the verses I just shared we see Paul telling us that we are both carnal and spirit. We also see him tell us that if we walk in the flesh we will have the fruits of the flesh and reap corruption. But then he also says that IF we crucify the flesh through the spirit we will reap everlasting life.
So we have a choice. Will we use the grace of God for a free pass to sin, or will we use that grace to deny sin?