This was put forward with great clarity (and beauty) by Ralph Waldo Emerson: that the highest soul is one who does not discriminate between good and evil but sees both as necessary complements of the whole.
Or rather, that the only ultimate evil is to sever the true unity of reality by forcibly introducing an artificial schism between good and evil - such that the wholeness of life and of each human life is destroyed.
From the monist perspective which sees unity as the ultimate truth, this must be correct; thus all Christians are revealed as (qualified) pluralists (as are most other religions).
And since unconstrained pluralism collapses into monism (think about it); the truth of Christianity (and most other religions which have a limited-pluralism) is thus put wholly upon revelation - it is revelation (and that only) which tells us the extent of pluralism.
But it is this deistic spirituality of non-discrimination - with roots in the Romantic movement including the New England Transcendentalists - that underlies the incoherent concretization and perversion of modern politically-correct 'non-discrimination', and the ethic that the only true evil is to 'discriminate'.