Luther, That These Words (AE 37:27; WA 23:85.28-87.4): For Christian unity consists in the Spirit, when we are of one faith, one mind, one heart, Ephesians 4[:3 ff.]. This, however, we will gladly do: in civil matters we are glad to be one with them, i.e. to maintain outward, temporal peace. But in spiritual matters, as long as we have breath, we intend to shun, condemn, and censure them, as idolaters, corrupters of God’s Word, blasphemers, and liars; and meanwhile, to endure from them, as from enemies, their persecution and schism as far and as long as God endures them; and to pray for them, and admonish them to stop. But to acquiesce in, keep silence over, or approve their blaspheming, this we shall not and cannot do.