This points to 1918 - 19, when their preaching work was rendered almost dead by foes, but Jehovah’s servants were miraculously revived for their ministry.
See viitab aastatele 1918 — 1919, mil nende kuulutustöö summutati vaenlaste poolt peaaegu täielikult, kuid mil Jehoova sulased ime kaudu teenimiseks taaselustati.