Faith is only separated from obedience insofar as faith all by itself is what MAKES you righteous. From that righteousness we then do works of righteousness. Those works then testifying on our behalf that we have the righteousness that comes from God through faith.
The main error of separating faith and obedience of God is that they arrive in the heart at the same time: faith is not ever separate from obedience to the faith, no more than shining is ever separate from the light that shines:
For the glory of God did lighten it, and the Lamb is the light thereof.
The faith of Jesus is the light thereof, and obedience to the faith is the glory that He lightens.
Separating faith and obedience to the faith separates the Lamb from God.
We believe we obey, and nothing in between. To separate faith from obedience is to separate I from Am.
With God there is no believing without obeying, even as there is no I without Am.
We do not believe
and then obey, but we believe and we obey. If we believe we are obeying. When we believe, we obey. There is no believing without obeying, which is dead. And there is no obeying without believing, which is vain.
There is no temporal time difference between the two, because obedience with faith begins in the heart and does the work of salvation to purify our hearts, cleanse our minds, and our hands of sins.
The instant work of salvation by faith is obeying the first commandment to love God with all the heart and the mind and the soul.
We obey God in the heart to love Him with all the heart: to obediently cast down every vain imagination and thought for sin from the mind, and so purge every lust from the heart.
If God does not see that obedience working in the heart, then He does not see His faith at all, no more than He would see His Light without His shining thereof.
People who speak of outward works of faith
only, show the carnal mind at work, which does not speak of the inner works of obedience to the faith.
It is not faith alone in the heart followed by outer works of the body, but rather it is faith obeying God in the heart, with outer obedience following inward obedience to God.
The first work of faith that the believer does is to obey the first commandment and purify their hearts and minds, that they may indeed love Him with all the heart and mind, and so obey him in all things of the body.
We obey Him in all things inwardly, then we will obey Him in all things outwardly.
Obeying the commandment to purify our hearts of lust and cleanse our minds of vain and sinful imagination is keeping the commandment to love God with all the heart.
Faith alone in the heart is dead, because it is not obeying God to love Him with all the heart.
Faith alone in the heart are them who love God with the mouth, but not in deed and in truth, which begins in the heart.
Them who are not loving God with all their heart and mind are not being saved by obedience to the faith of Jesus: They are the double minded who are still commanded to purify their hearts, that they may indeed cleanse their hands of sins once for all.