Charles Ellicott Commentary Mark 13:4

"Tell us, when shall these things be? and what [shall be] the sign when these things are all about to be accomplished?" — Mark 13:4 (ASV)

When shall these things be?—Note, as, perhaps, characteristic of a Gospel written for Gentiles, the use of the vaguer words for the more definite sign of Thy coming, and of the end of the world, in Matthew 24:3.