In speaking of his return in glory, Jesus mentioned certain definite signs by which his followers will know that his coming is near. To explain more clearly the purpose of these “signs,” Jesus spoke a brief parable in which he compared their appearance to the foliage put forth in the springtime which becomes a certain harbinger of the summer. Many have supposed that Jesus indicated Israel by his reference to “the fig tree” and have concluded that a revival of Judaism and a return of the Jews to Palestine will be a certain indication that the present age is drawing to its close. Whatever may be predicted elsewhere concerning the Jews, there is no such reference here, for Jesus not only said, “Behold the fig tree,” but also, “all the trees.” His meaning is perfectly plain. He did not refer to nations under the figure of trees, but he declared that as the foliage is a sure precursor of summer, so the signs of which he spoke are a certain indication of his imminent return. “Even so ye also, when ye see these things coming to pass, know ye that the kingdom of God is nigh,” the Kingdom which is to be established in glory at the appearing of our Lord.
Jesus further awakened the expectation of his hearers by the statement, “This generation shall not pass away, till all things be accomplished.” It is improbable, as again many have supposed, that Jesus referred to the Hebrew race by the term “this generation.” The words are almost certainly to be interpreted in their usual significance and “all things” to be “accomplished” refers to the destruction of Jerusalem regarded as the type and symbol of the return of Christ. These two events are thus closely related in this prophetic discourse and the literal fulfillment of the first gives to believers a more confident assurance of the certain occurrence of the latter: “Heaven and earth shall pass away: but my words shall not pass away.” The hope that our Lord will come is not based on human conjectures, but on his own unfailing predictions. All that is material and temporal may cease to exist, but his promises are eternal.
In view of such glorious prophecies the heart of the Christian is ever to be set upon the gracious realities relating to the coming of the Master. The followers of Christ must be on their guard lest they be overcome by the influences which Jesus described as characterizing the days immediately preceding his return. There will be temptation to self-indulgence and indifference and absorption in worldly cares. Believers are warned to be on their watch lest the coming of Christ overtake them unexpectedly, as indeed it will come upon others. They are urged to watch and to pray that they may be able to escape from those judgments which will break upon a guilty world, and may be counted worthy to take their places in the glorious Kingdom of their Lord.
5. The Historic Statement. Ch. 21:37, 38
37 And every day he was teaching in the temple; and every night he went out, and lodged in the mount that was called Olivet. 38 And all the people came early in the morning to him in the temple, to hear him.
Luke closes his account of the discourse delivered by Jesus in reference to his return by a statement which summarizes the general conditions which marked the final events of Jesus' earthly ministry. He states that Jesus passed his days teaching in the Temple and spent the nights under the open skies on the slopes of the Mount of Olives, and that the people were so eager to hear him that they resorted to the Temple early each morning. This statement is rather in the nature of a review. It marks a transition in the narrative. In reality, Jesus seems to have returned to the city only once more, when he was arrested and led forth to die. Luke prepares us for these last events. The story has reached its climax.