So great and so concerning truth.1692–1717, Robert South, Twelve Sermons Preached upon Several Occasions, volume (please specify |volume=I to VI), London:
Etymology From concern + -ing. The adjective and preposition follow from the verb.
1
That which one is concerned in; one's business.
We shall write to you, / As Time and our Concernings shall importune, / How it goes with us, and do look to know / What doth befall you here.c. 1603–1604 (date written), William Shakespeare, “Measure for Measure”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act I, scene i]: