It is particularly remarkable that, despite being at the same distance, the sun illuminates and warms everything equally, unlike artificial fire, which shines from afar but only provides warmth when approached, as noted by Theodoret. In acknowledging both the beauty and the might of the sun, David exemplifies the power and generosity of its Creator. Such is a straightforward and humble explanation of David's words.
Some, like Asterius, interpret these passages in a less direct manner, suggesting that the heavens refer to the celestial ranks of angels who eternally glorify God, as revealed to the prophets Ezekiel and Isaiah. Origen and Asterius posited that the term ‘heaven’ refers to those who rise above earthly concerns through contemplative wisdom, while the ‘firmament’ signifies individuals who, through diligent wisdom, remain steadfast against temptations. The ‘days’ represent the radiant angelic forces, who are tasked with conveying God's commandments to the lower ranks, while the ‘nights’ symbolize those whose hearts and physical states are darkened, hindering divine illumination. Thus, they elucidate the rest of the Psalm in light of these interpretations. Regarding the statement ‘Their voice has gone out into all the earth,’ the Apostle Paul, in his letter to the Romans, aptly applied these words to the Evangelists and Apostles of the Lord. As for the phrase ‘In the sun, He has set His dwelling,’ some suggest this means that Christ resides within those who radiate the virtues. He proclaimed, “I and the Father will come to Him and make Our home with him.” Alternatively, Christ’s dwelling can be seen as the humanity He united with in the Incarnation, where God the Word resided in light, living with glory and visibility like a radiant bridegroom, more beautiful than the sons of men.
This Christ, the sun of righteousness as Malachi described Him, delighted in walking the path of the cross towards death for our salvation. After descending from the heights of heaven, He returned once more. “I left the Father and came into the world,” He stated, “I am leaving the world and going back to the Father.” No one was exempt from the illumination and warmth of His teachings; rather, all were spiritually enlightened and embraced.
Gregory of Nazianzus described the sun as beautiful as a bridegroom, swift as a giant, encompassing warmth to every corner, ensuring that nothing remains untouched by its light, filling every eye with brilliance and the earthly nature with warmth. It warms without consuming because of its gentle presence, moving as if inherent to all, universally surrounding everything. Theodoret noted that the heavens were designated as the sun's dwelling, allowing it to appear, like a grand chariot, resplendent as a bridegroom emerging with radiant splendor; in its swiftness, it resembles a giant running with unstoppable force, sweeping forth without hindrance. Thus, it rises at dawn, traverses the sky throughout the day, and at evening, having imparted its warmth to every creature.
Maximus the Confessor explained that just as a giant connotes a mighty force, so too did the Lord rejoice on His path to crafting salvation, bravely confronting and defeating the demon legions to liberate us. Basil the Great further remarked that if a decaying sun is so magnificent, how much more radiant is the Sun of Truth? If it is tragic for the blind not to see it, how grave is the loss for the sinner who is deprived of this true light?