Luke 12:56 - Exposition

Ye can discern the face of the sky and of the earth; but how is it that ye do not discern this time? These things had an interest for them. Heat and drought, wind and rain, affected materially the prospect of their wheat-harvest and vintage, the fruitfulness of their orchards and oliveyards, therefore they gave their whole mind to the watching of the weather; but to the awful signs of the time in which they were living they were blind and deaf. What were these signs?