Verse 33. - Heaven and earth shall pass away: but my words shall not pass away. A general conclusion to the whole prophecy. "No word of mine," said the Master, "will ever pass away unfulfilled. Some of you will even live to see the terrible fulfillment of the first part of these utterances. All that mighty pile of buildings called Jerusalem will pass away, but my words which told of their coming ruin will remain. All this vast creation, earth, and stars will disappear in their turn, but these sayings of mine, which predict their future passing away into nothingness, will outlive both earth and heaven."

21:29-38 Christ tells his disciples to observe the signs of the times, which they might judge by. He charges them to look upon the ruin of the Jewish nation as near. Yet this race and family of Abraham shall not be rooted out; it shall survive as a nation, and be found as prophesied, when the Son of man shall be revealed. He cautions them against being secure and sensual. This command is given to all Christ's disciples, Take heed to yourselves, that ye be not overpowered by temptations, nor betrayed by your own corruptions. We cannot be safe, if we are carnally secure. Our danger is, lest the day of death and of judgment should come upon us when we are not prepared. Lest, when we are called to meet our Lord, that be the furthest from our thoughts, which ought to be nearest our hearts. For so it will come upon the most of men, who dwell upon the earth, and mind earthly things only, and have no converse with heaven. It will be a terror and a destruction to them. Here see what should be our aim, that we may be accounted worthy to escape all those things; that when the judgements of God are abroad, we may not be in the common calamity, or it may not be that to us which it is to others. Do you ask how you may be found worthy to stand before Christ at that day? Those who never yet sought Christ, let them now go unto him; those who never yet were humbled for their sins, let them now begin; those who have already begun, let them go forward and be kept humbled. Watch therefore, and pray always. Watch against sin; watch in every duty, and make the most of every opportunity to do good. Pray always: those shall be accounted worthy to live a life of praise in the other world, who live a life of prayer in this world. May we begin, employ, and conclude each day attending to Christ's word, obeying his precepts, and following his example, that whenever he comes we may be found watching.Verily I say unto you, this generation,.... See Gill on Matthew 24:34. See Gill on Matthew 24:35. All the Oriental versions read here as there, "all these things"; before related.