Meanings of unchangeable truth in English

Secondly, because the former prophecy is "according to the unchangeable truth" [*Q.

There is no permanent absolute unchangeable truth; what we should pursue is the most convenient arrangement of our ideas.

All other events, mental or physical, are but passing appearances, while the only absolute and unchangeable truth underlying them all is the self.

Who now teacheth us, but the unchangeable Truth?

3: Further, future contingencies are foreknown by the prophets "with unchangeable truth."

Neither I in thee, nor thou in me; but both in the unchangeable Truth itself, which is above our souls.

Such turnarounds in the Church may encourage wariness in those inclined to make confident dogmatic pronouncements intended to lay down unchangeable truths for the future.