A.T. Robertson Commentary Luke 12:56

"Ye hypocrites, ye know how to interpret the face of the earth and the heaven; but how is it that ye know not how to interpret this time?" — Luke 12:56 (ASV)

To interpret this time (τον καιρον τουτον δοκιμαζειν). To test δοκιμαζειν as spiritual chemists. No wonder that Jesus here calls them "hypocrites" because of their blindness when looking at and hearing him. So it is today with those who are willfully blind to the steps of God among men. This ignorance of the signs of the times is colossal.