So much false, distorted, and misleading information in and around Christianity, and human attention and abilities are so limited, that we need ways of swiftly recognizing and disposing-of clear wrongness (regardless of the vast volumes are teaching and commentary that affirm the wrongness).
Because of human inattention and inability; the most effective way of disguising and perpetuating wrongness, is by combining complexity and abstraction - therefore our best antidote is to keep things personal and direct.
Christians have the great advantage that Jesus made it clear (in the teachings and recorded behaviour of the close-friend eye-witness account of the Fourth Gospel "John") that we should think of God's relationships with Men, in terms of a family.
Since nearly everybody has sufficient experience, backed by innate knowledge and instincts, to know how an ideal family ought to behave; then we can evaluate statements/ assertions about God and divine purpose by this family comparison.
Such a comparison disposes of a great deal of common (mainstream, official, and traditional) assertion about the basis structure of the plan of salvation for Mankind in context of the spiritual war of this world.
In particular, we can infer that salvation is not really "a plan" - at least, not if a "plan" is the kind of thing that is used by a national military leader in order to win a war.
The proper analogue of "victory" in the war of this world ought to be (not one nation defeating another, but) the salvation of an individual person: which is their transformation into resurrected eternal life in Heaven.
This fits with what Christian-committed parents wish for each and every one of their beloved children.
Such parents are Not seeking a spiritual "group-victory", analogous to the material victory of a tribe or nation; because such a victory would reasonably (and necessarily) require the spiritual sacrifice of one or (almost certainly) many of their beloved children in order that the family-as-a-whole might defeat then enemy, and triumph in some (hoped-to-be) overall way.
However; loving families don't aspire to work by such "spiritual sacrifices"; they do not consign one or more children to damnation (perhaps hell) in order that the others, or the group-as-a-whole might be saved.
No!... instead, ideally loving families would seek always for the best - spiritually - for each and all members.
The family conceptualized as a group is of secondary concern, and the "unit" of family is derived from the individual members and their mutual love.
The family analogy reveals the wicked ultimate consequences of talk on the lines that God has "already won" the spiritual war of this world; and/or the common assumption that salvation is groupish - of tribes, nations, Mankind.
Such talk is analogous to saying that a nation has "already" won a war, despite that fighting continues and thousands are still dying and being hurt and maimed.
Such a statement makes sense on in terms of the the primacy of nation; but when individual beloved persons are primary, then a war is "won" only person by person.
And a war continues uncertain for as long as there are any persons whose spiritual destiny is not decided.
So, in following Christ; the only "victory" is the salvation of particular persons, and such victory is actually an eternal transformation of that person's nature - and this is not an end-point for him, or the world; but a new beginning.
Life itself, family life (where the persons involved are all eternal beings), is the unending participation of each individual in ongoing divine creation.
And divine creation is an aspect of love; the consequence of love, the purpose of love - which is why the ideal family is so exact an analogy.
Divine creation is not of its nature "winnable". Creation is to be lived; and lived well; with each individual who chooses resurrection making his own unique contribution towards its open-ended and ever-lasting growth.