“Then shall appear the sign of the Son of Man in Heaven;”that is, the cross being brighter than the sun, since this last will be darkened, and hide himself, and that will appear when it would not appear, unless it were far brighter than the beams of the sun. But wherefore doth the sign appear? In order that the shamelessness of the Jews may be more abundantly silenced. For having the cross as the greatest plea, Christ thus cometh to that judgment-seat, showing not His wounds only, but also the death of reproach. “Then shall the tribes mourn,” for there shall be no need of an accusation, when they see the cross; and they shall mourn, that by His death they are nothing benefited; because they crucified Him whom they ought to have adored.