Immediately after the affliction of those days the sun will be darkened, the moon will not give its light, and the stars will fall from the sky, and the powers of the heavens will be shaken. And then will the sign of the Son of Man appear in the sky, and all the tribes of the earth will wail; and they will see the Son of Man coming in the clouds of heaven with power and great glory. And He will send forth angels with a loud blast of the trumpet, and they will gather His chosen from the four winds from one end of the heavens to the other. Matt. 24:29-31.

In the spiritual sense this does not mean that the sun and the moon will be darkened, stars will fall from the sky, and the Lord's sign will appear in the skies, and that they will see Him in the clouds accompanied by angels with trumpets. All the expressions here have spiritual meanings referring to the church; and they describe its state at its end. In the spiritual sense the sun, which will be darkened, means love to the Lord. The moon, which will not give its light, means faith in Him. The stars which will fall from the sky, mean items of knowledge concerning truth and good. The sign of the Son of Man in the sky means the Divine truth given by Him in the Word being made visible. The tribes of the earth, who will wail, means the failure of all truth to do with faith and of all good to do with love. The coming of the Son of Man in the clouds of heaven with power and glory means the Lord's presence and His revelation in the Word. The clouds of heaven mean the literal sense of the Word, the glory the spiritual sense of the Word. The angels with the loud blast of the trumpet mean heaven from which Divine truth comes. Gathering the chosen from the four winds from one end of the heavens to the other means the new heaven and the new church, composed of those who have faith in the Lord and live in accordance with His commandments. It is quite plain that the darkening of the sun and the moon is not meant, nor the falling of stars to earth, because of the Prophets, where similar statements are made about the state of the church at the time the Lord was to come into the world. For instance, in Isaiah:

Behold the fierce day of Jehovah will come and the blaze of His anger. The stars of the skies and their constellations will not shine with their light, the sun will be darkened in its rising, and the moon will not cause its light (lumen) to shine, I shall visit upon the world its wickedness. Isa. [13:9-11;] 24: 21, 23.

In Joel:

The day of Jehovah is coming, a day of darkness and murk. The sun and the moon will be turned black, and the stars will abate their shining. Joel 2:1, 2, 10; 3:15.

In Ezekiel:

I shall cover the heavens and make the stars black. I shall cover the sun with a cloud and the moon will not cause it light to shine. I shall darken all the luminaries that give light, and make darkness upon the earth. Ezek. 32:7, 8.

The day of Jehovah means the Lord's coming, which took place when there was no more good of love and truth of faith left in the church, nor any knowledge of the Lord. That is why it is called a day of darkness and murk.