Cyrill of Alexandria
He does not permit them to fall into negligence and fears that might lead to inactivity; rather, He stirs them to be diligent and instills in them an fervent zeal. At the same time, He prepares them in faith and anchors them with His assurance, urging them to trust boldly, promising even more of His presence that they desire. He emphasizes this connection by stating, "My Spirit shall stand in the midst of you; be courageous." It is unlikely that anyone with a sound mind and firm conviction would doubt that God empowers and emboldens those who faithfully strive to erect the divine temple, which is the Church, as He will dwell among them through the Holy Spirit. Consequently, their endeavors will yield success, allowing them to display their lives as a magnificent and glorious sanctuary.
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Similarly, the Lord communicated to the holy Apostles, entrusted with the task of establishing the Church and gathering believers into this sacred abode, the reassurance: "Behold, I am with you" (Matthew 28:20). He explicitly reveals that His presence would be with them through the Spirit, declaring: "I will not leave you orphans; I will come to you" (John 14:18). He also mentions the necessity of His departure for the coming of the Comforter, stating: "If I do not go away, the Comforter will not come to you; but if I depart, I will send Him to you" (John 16:7). Thus, He remains with those who labor to build His temple, while those who reject Him are left abandoned and distanced from Him. This includes those who, prompted by Beelzebub, "speak anathema to Jesus" (1 Cor. 12:3), corrupting the truth and spreading a damaging poison among the unsuspecting.