The version of that clause in Matthew and Luke adds a significant word,--'faithless and _perverse_ generation.' The addition carries a grave lesson, as teaching us that the two characteristics are inseparably united; that the want of faith is morally a crime and sin; that unbelief is at once the most tragic manifestation of man's perverse will, and also in its turn the source of still more obstinate and wide-spreading evil. Blindness to His light and rejection of His love, He treats as the very head and crown of sin. Like intertwining snakes, the loathly heads are separate; but the slimy convolutions are twisted indistinguishably together, and all unbelief has in it the nature of perversity, as all perversity has in it the nature of unbelief. 'He will convince the world of sin, because they believe not on Me.' May we venture to say, as we have already hinted, that all this pain is in some mysterious way still inflicted on His loving heart? Can it be that every time we are guilty of unbelieving, unsympathetic rejection of His love, we send a pang of real pain and sorrow into the heart of Christ? It is a strange, solemn thought. There are many difficulties which start up, if we at all accept it. But still it does appear as if we could scarcely believe in His perpetual manhood, or think of His love as being in any real sense a human love, without believing that He sorrows when we sin; and that we can grieve, and wound, and cause to recoil upon itself, as it were, and close up that loving and gracious Spirit that delights in being met with answering love. If we may venture to take our love as in any measure analogous to His--and unless we do, His love is to us a word without meaning--we may believe that it is so. Do not we know that the purer our love, and the more it has purified us, the more sensitive it becomes, even while the less suspicious it becomes? Is not the purest, most unselfish, highest love, that by which the least failure in response is felt most painfully? Though there be no anger, and no change in the love, still there is a pang where there is an inadequate perception, or an unworthy reception, of it. And Scripture seems to countenance the belief that Divine Love, too, may know something, in some mysterious fashion, like that feeling, when it warns us, 'Grieve not the Holy Spirit of God, whereby ye are sealed unto the day of redemption.' So _we_ may venture to say, Grieve not the Christ of God, who redeems us; and remember that we grieve Him most when we will not let Him pour His love upon us, but turn a sullen, unresponsive unbelief towards His pleading grace, as some glacier shuts out the sunshine from the mountain-side with its thick-ribbed ice.