For the sake of these people, Thou shalt ascend again: this refers to His resurrection and return to the heights of heaven. After His glorification, He bestowed the Holy Spirit, which could not be given before His ascension, as the Gospel states, for the Holy Ghost was not yet given because Jesus was not yet glorified (John 7:39). Thus, He returned on high for the sake of the assembly, sending the Holy Spirit, which filled the apostles and established churches throughout the world.
Additionally, this can be interpreted as, Arise, O Lord, in Thy wrath, and be exalted in the sight of my enemies, meaning arise in Your anger so that my enemies may not comprehend You; to be exalted signifies becoming hidden from their understanding, relating to the silence previously mentioned. This exaltation is described in a psalm: ‘And He ascended upon the Cherubim, and flew, and made darkness His secret place.’ In this divine elevation or concealment, due to their sinful wilderness, they will not grasp the One they crucified, while believers will surround Him. In His very humiliation, He experienced exaltation, as He was not comprehended. Therefore: ‘And arise, O Lord my God, in the commandment which Thou hast given,’ suggests that when You reveal Yourself, whether high or low, let not my enemies perceive You. The wicked are the adversaries of the righteous, and the ungodly oppose the faithful. The gathering of the people signifies that those who crucified You will not comprehend You, leading the Gentiles to believe in You, and so they will surround You. However, what follows reveals a deeper sorrow in its early recognition than joy in understanding. It continues, and return to the heights for their sake, indicating that for the benefit of this assembly of humanity, with which the Churches are filled, You shall rise again, meaning to become incomprehensible once more.
But then, for their sake, indicating that this very assembly may provoke You, prompting the question: When the Son of man cometh, shall He find faith on earth? (Luke 18:8). Concerning false prophets, referring to heretics, it is proclaimed, ‘Because of their iniquities, love will grow cold in many’ (Matt. 24:12). Consequently, among the Churches—that assembly of peoples and nations where the Christian faith has spread—sinners will be so abundant that we are already witnessing its truth. Is this not the famine of the word foretold by Amos (Amos 8:11), which another prophet also highlighted? Is it not due to the sins of this assembly, which alienate them from the light of truth, that God returns to the heights, preserving faith pure and untainted from misconceptions? This is a privilege obtained, if at all, by the few who are called, Blessed is he that endureth to the end, he shall be saved (Mark 13:13). It is said without doubt, And for the sake of this assembly Thou shalt return to the heights, meaning You will withdraw again into the depths of Your mystery, even for the sake of this gathering of nations, carrying Your name but not Your works.