The following is my translation of the notes and useful applications of the Holy Gospel for the Second Sunday of Advent (Populus Zion), Luke 21:25–33, as they are found in Das Weimarische Bibelwerk (1877). Square brackets indicate my own notes and additions. For the useful applications, I recommend the reader see this very helpful article by Dr. Benjamin T. G. Mayes.

III. A prophecy concerning the end of the world, in which signs are recounted in like manner. (v. 25–38)
Annotated Text
25. “And * there will be seen signs in the sun, moon, and stars (for the sun and the moon will lose their radiance and the stars will fall from heaven); and there will be anxiety among the people1 (especially the godless), and they will be timid (so that they do not know what to do); † and the sea and the waves will roar (The waters will burst forth, destroy land and people, and otherwise roar and rage in terrible unheard ways).
* Isaiah 31:10; Matthew 24:29
1 Greek: “the peoples” [ἐθνῶν]
† Psalm 46:4 (Mark 13:24; Joel 3:4; Revelation 6:12)
26. And men will be * languishing from fear and from expectation of the things which are shall come upon the earth (on account of the terrifying signs; therefore, the people on earth will have to wait for nothing other than the Last Day and the end of the world); for even the powers of the heavens will be shaken (the heavens with their stars will not be as powerful as before for warmth, fruitfulness, and for hidden workings).
* Isaiah 64:7; Ezekiel 24:23
27. And * then (immediately after these preceding signs) they (the people on earth) will see the Son of Man (Christ in His assumed humanity) coming in the clouds with great power and glory (He will allow His divine omnipotence and glory communicated to Him according to His human nature to be seen and heard everywhere).
* Daniel 7:13 (Matthew 26:64)
28. But when you see these things begin to happen (do not wait only for the last moment, but rather when you see beforehand these things that are preached come into fulfillment more and more), so (you believers) look up (be renewed in your courage), and raise your heads (and hearts with joyful confidence and heartfelt longing), * for your redemption (indeed more and more) draws near (because it is present that through the Last Day you shall be completely delivered from all evil, Romans 8:23).”
* Romans 8:21, 23
29. And He (Christ) spoke to them a parable (how to recognize the presence of the Last Day), * “Look at the fig tree and all the trees.
* Matthew 24:32 (Mark 13:28)
30. When they are already budding, you see in them and take note that summer is now near.
31. So also you (believers and pious people), when you see all these things happening, then know that the Kingdom of God is near (do not be all to terrified at the signs previously recounted, but rather assure and comfort yourselves that you shall soon be relocated into the kingdom of eternal joy and glory and shall have your joyful everlasting summer there).
32. Truly, * I say to you, this generation (of the Jews) will not pass away (not entirely be eradicated, but rather wander about, scattered here and there), until all this happens (until the Last Day shall come upon the previously mentioned signs).
* Matthew 24:34ff.
33. * Heaven and earth will pass away, but My words † will not pass away.
* Luke 16:17; Psalm 102:27; Isaiah 51:6; Matthew 5:18
† Isaiah 40:8
34. But guard yourselves, that your hearts are not weighed down (that they cannot lift themselves to God on high with devotion in prayer, faith, hope, etc.) with * gluttony and drunkenness, and with cares of sustenance, and the day (the day of judgment) comes upon you quickly.
* Romans 13:13; Galatians 5:21; Ephesians 5:18 (1 Thessalonians 5:5ff.; 1 Peter 4:7ff.)
35. For * it will come as a snare upon all who dwell on earth (just as a bird-catcher casts the net unexpectedly and swiftly over the birds when they hop about on the ground, pick up the grains, and fear no evil, so also when the godless and the earthly minded children of the world are secure, gorging and getting and drunk, and indulging in the lusts of this world, they will be suddenly and unexpectedly trapped and startled by the Last Day).
* 1 Thessalonians 5:3 (2 Peter 3:10)
36. So now you therefore be vigorous (vigilant) at all times (flee security and live always in Christian preparedness), and pray, that you may be worthy (deemed worthy by God by grace), to escape all these things that (before and on the Last Day, in a terrible manner, especially with swift abruptness, v. 35) shall happen, and to stand1 before the Son of Man (that you may appear before the judgment seat of Christ with a joyful countenance and a good conscience and not be rejected by Him with the godless, Psalm 1:5; Wisdom 5:1).”
(Matthew 24:42, 25:13; Mark 13:34ff; Revelation 3:2, 16:15)
1 * “to persist,” see Psalm 1:5
Useful Applications
III. WARNING: That one ought to expect the Last Day at all times, and that we ought to guard ourselves against gluttony, drunkenness, and the cares of sustenance (or avarice) so that the Last Day may not overtake us while we are unprepared, for by these things the hearts of men are weighed down and many damnable sins are committed. (v. 34)