I know your deeds: that you are neither hot nor cold. I wish you were either one or the other! So because you are lukewarm neither hot nor cold- I am about to spit you out of my mouth. Revelations 3:15-17

This affirmation in the Bible, in the book of Revelations, which describes the attitude of warmth,the lukewarm followers, of those who trust only in the goods they own: "I am rich, I have acquired wealth and do not need a thing" Revelations 3:17; can be interpretate as the existance of an intermediate state between good and evil.
Why does exist an intermediate state between good and evil?
From the metaphysical point of view two explanations of this situation exist:

1) Aristotle in his book Metaphysics tells to us that when two opposite ones belong to the same genre there is the intermediate state:
a) For example in the genre of temperatures we have the cold, the hot so there is the intermediate state of the warm
b) In the genre of the elections we have the good, the evil and necessary the regular
c) On the other hand the truth and the falsity belong to different genres, the truth to the "being", the falsity to "not to be", therefore there is no intermediate state between both. Something is false or true.

2) In this point of view we incorporate the metaphysical concept of deprivation:
Definition of deprivation (Metaphysics Book V Chapter XXII)
a) But they have some of the attributes that are owned by Nature, even when the subject in question is unfit for Nature to have it; for example, we say that a plant is deprived of eyes.
b) If the thing itself or its kind has an attribute that corresponds by Nature; as a blind man and a mole are deprived of sight in different directions; this regard of its kind, that by itself.
c) If, in spite of the fact that one is suitably for Nature to possess something, it is not had in the moment in which for Nature it corresponds; the blindness is a privation, but one is not blind to all the ages, but only if the sight is not had at the age in which it corresponds to have it by Nature.
Examples: The opinion and the ignorance are deprivations of knowledge, there is who opinion of medicine, who is ignorant of medicine and the medical doctor who knows. Another example is the good; however evil is a privation of the good affected by falsehood. Evil is not a nature, remember that when the evil became in its most destructive degree is destroyed by itself, Aristotle tells us; and the virtue (example: justice, justice is not always good) describe a deprivation of the good affected by the passions.

Is then established the existence of this intermediate state.
Morality and moral virtues such justice and prudence describe this state, we want to be happy and to achieve it we practice the virtue. The virtue and moral life of the soul describes a poor life without taking any risk: to accommodate, to opinion like the most of the people and do things “as everyone makes",” the fear to innovate is the mean characteristic of this state”. “This is the intrinsic meaning of be “lukewarm“.
But ethics and spirituality embark us to live in another way: to take risks, to engage with ideals, to strive for excellence, to perfect us, to innovate and be creative, ultimately to get out of our comfort zone. These are the “salt men of the gospel".
The choice is to be lukewarm of salted! (See article about salt and wisdom)
Humanity is currently in this intermediate state between good and evil, in this lukewarm state.