Matthew 13:43

But as we said above in reference to the words, "Then shall the righteous shine as the sun," that the righteous will shine not differently as formerly, but as one sun, we will, of necessity, set forth what appears to us on the point. Daniel, knowing that the intelligent are the light of the world, and that the multitudes of the righteous differ in glory, seems to have said this, "And the intelligent shall shine as the brightness of the firmament, and from among the multitudes of the righteous as the stars for ever and ever." And in the passage, "There is one glory of the sun, and another glory of the moon, and another glory of the stars: for one star differeth from another star in glory: so also is the resurrection of the dead," the Apostle says the same thing as Daniel, taking this thought from his prophecy. Some one may inquire how some speak about the difference of light among the righteous, while the Saviour on the contrary says, "They shall shine as one sun." I think, then, that at the beginning of the blessedness enjoyed by those who are being saved (because those who are not such are not yet purified), the difference connected with the light of the saved takes place: but when, as we have indicated, he gathers from the whole kingdom of Christ all things that make men stumble, and the reasonings that work iniquity are cast into the furnace of fire, and the worse elements utterly consumed, and, when this takes place, those who received the words which are the children of the evil one come to self-consciousness, then shall the righteous having become one light of the sun shine in the kingdom of their Father. For whom will they shine? For those below them who will enjoy their light, after the analogy of the sun which now shines for those upon the earth? For, of course, they will not shine for themselves. […]

And as the offences are referred to the tares, so the righteous are reckoned among the children of the kingdom; concerning whom it follows, Then the righteous shall shine as the sun in the kingdom of their Father. For in the present world the light of the saints shines before men, but after the consummation of all things, the righteous themselves shall shine as the sun in the kingdom of their Father. That He says, Then shall they shine, implies that they now shine for an example to others, but they shall then shine as the sun to the praise of God. He that hath ears to hear, let him hear.

(Verse 43.) Then the righteous will shine like the sun in the kingdom of their Father. Let anyone with ears listen!

"Then shall the righteous shine forth as the sun in the kingdom of their Father." Not because it will be just so much only, but because this star is surpassed in brightness by none that we know. He uses the comparisons that are known to us.

"And He answered," so it is said, "and said unto them, He that soweth the good seed is the Son of Man; the field is the world, the good seed, these are the children of the kingdom, but the tares are the children of the wicked one; the enemy that soweth them is the devil; and the harvest is the end of the world, and the reapers are angels. As therefore the tares are gathered and burned in the fire; so shall it be in the end of this world. The Son of Man shall send His angels, and they shall gather out of His kingdom all things that offend, and them which do iniquity; and shall cast them into the furnace of fire, there shall be weeping and gnashing of teeth. Then shall the righteous shine forth as the sun in the kingdom of their Father." For whereas He Himself is the sower, and that of His own field, and out of His own kingdom He gathers, it is quite clear that the present world also is His. But mark His unspeakable love to man, and His leaning to bounty, and His disinclination to punishment; in that, when He sows, He sows in His own person, but when He punishes, it is by others, that is, by the angels.